Update docs with proper assertions

author: Bruce Hill <bruce@bruce-hill.com> 2025-09-21 23:23:59 -0400
committer: Bruce Hill <bruce@bruce-hill.com> 2025-09-21 23:23:59 -0400
commit: 5824a2ef19879c59866667aced6b3f90e5925648 (patch)
tree: a18ddeadb0c164c7a544b571c3968f86afb759ba
parent: bf067544e98f4085c26161953e301aaa00a904df (diff)
186 files changed, 1585 insertions, 2821 deletions
diff --git a/api/api.md b/api/api.md
index f192c629..49ca6a5b 100644
--- a/api/api.md
+++ b/api/api.md
@@ -30,8 +30,7 @@ force_tty | `Bool` | Whether or not to force the use of /dev/tty.  | `yes`
 
 **Example:**
 ```tomo
->> ask("What's your name? ")
-= "Arthur Dent"
+assert ask("What's your name? ") == "Arthur Dent"
 
 ```
 ## exit
@@ -92,8 +91,8 @@ name | `Text` | The name of the environment variable to get.  | -
 
 **Example:**
 ```tomo
->> getenv("TERM")
-= "xterm-256color"?
+assert getenv("TERM") == "xterm-256color"
+assert getenv("not_a_variable") == none
 
 ```
 ## print
@@ -201,20 +200,14 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Bool.parse("yes")
-= yes : Bool?
->> Bool.parse("no")
-= no : Bool?
->> Bool.parse("???")
-= none : Bool?
+assert Bool.parse("yes") == yes
+assert Bool.parse("no") == no
+assert Bool.parse("???") == none
 
->> Bool.parse("yesJUNK")
-= none : Bool?
+assert Bool.parse("yesJUNK") == none
 remainder : Text
->> Bool.parse("yesJUNK", &remainder)
-= yes : Bool?
->> remainder
-= "JUNK"
+assert Bool.parse("yesJUNK", &remainder) == yes
+assert remainder == "JUNK"
 
 ```
 
@@ -239,14 +232,10 @@ bit_index | `Int` | The index of the bit to check (1-indexed, range 1-8).  | -
 
 **Example:**
 ```tomo
->> Byte(6).get_bit(1)
-= no
->> Byte(6).get_bit(2)
-= yes
->> Byte(6).get_bit(3)
-= yes
->> Byte(6).get_bit(4)
-= no
+assert Byte(6).get_bit(1) == no
+assert Byte(6).get_bit(2) == yes
+assert Byte(6).get_bit(3) == yes
+assert Byte(6).get_bit(4) == no
 
 ```
 ## Byte.hex
@@ -268,8 +257,7 @@ prefix | `Bool` | Whether or not to prepend a `0x` prefix.  | `no`
 
 **Example:**
 ```tomo
->> Byte(18).hex()
-= "0x12"
+assert Byte(18).hex() == "0x12"
 
 ```
 ## Byte.is_between
@@ -291,12 +279,9 @@ high | `Byte` | The upper bound to check (inclusive).  | -
 
 **Example:**
 ```tomo
->> Byte(7).is_between(1, 10)
-= yes
->> Byte(7).is_between(100, 200)
-= no
->> Byte(7).is_between(1, 7)
-= yes
+assert Byte(7).is_between(1, 10) == yes
+assert Byte(7).is_between(100, 200) == no
+assert Byte(7).is_between(1, 7) == yes
 
 ```
 ## Byte.parse
@@ -317,18 +302,13 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Byte.parse("5")
-= Byte(5) : Byte?
->> Byte.parse("asdf")
-= none : Byte?
+assert Byte.parse("5") == Byte(5)
+assert Byte.parse("asdf") == none
+assert Byte.parse("123xyz") == none
 
->> Byte.parse("123xyz")
-= none : Byte?
 remainder : Text
->> Byte.parse("123xyz", &remainder)
-= Byte(123) : Byte?
->> remainder
-= "xyz"
+assert Byte.parse("123xyz", &remainder) == Byte(123)
+assert remainder == "xyz"
 
 ```
 ## Byte.to
@@ -350,15 +330,15 @@ step | `Byte?` | An optional step size to use. If unspecified or `none`, the ste
 
 **Example:**
 ```tomo
->> Byte(2).to(5)
-= func(->Byte?)
->> [x for x in Byte(2).to(5)]
-= [Byte(2), Byte(3), Byte(4), Byte(5)]
->> [x for x in Byte(5).to(2)]
-= [Byte(5), Byte(4), Byte(3), Byte(2)]
+iter := Byte(2).to(4)
+assert iter() == 2
+assert iter() == 3
+assert iter() == 4
+assert iter() == none
 
->> [x for x in Byte(2).to(5, step=2)]
-= [Byte(2), Byte(4)]
+assert [x for x in Byte(2).to(5)] == [Byte(2), Byte(3), Byte(4), Byte(5)]
+assert [x for x in Byte(5).to(2)] == [Byte(5), Byte(4), Byte(3), Byte(2)]
+assert [x for x in Byte(2).to(5, step=2)] == [Byte(2), Byte(4)]
 
 ```
 
@@ -380,8 +360,7 @@ x | `Int` | The integer whose absolute value is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (-10).abs()
-= 10
+assert (-10).abs() == 10
 
 ```
 ## Int.choose
@@ -402,8 +381,7 @@ k | `Int` | The number of things to be chosen.  | -
 
 **Example:**
 ```tomo
->> (4).choose(2)
-= 6
+assert (4).choose(2) == 6
 
 ```
 ## Int.clamped
@@ -425,8 +403,7 @@ high | `Int` | The highest value the result can take.  | -
 
 **Example:**
 ```tomo
->> (2).clamped(5, 10)
-= 5
+assert (2).clamped(5, 10) == 5
 
 ```
 ## Int.factorial
@@ -446,8 +423,7 @@ n | `Int` | The integer to compute the factorial of.  | -
 
 **Example:**
 ```tomo
->> (10).factorial()
-= 3628800
+assert (10).factorial() == 3628800
 
 ```
 ## Int.get_bit
@@ -470,14 +446,10 @@ bit_index | `Int` | The index of the bit to check (1-indexed).  | -
 
 **Example:**
 ```tomo
->> (6).get_bit(1)
-= no
->> (6).get_bit(2)
-= yes
->> (6).get_bit(3)
-= yes
->> (6).get_bit(4)
-= no
+assert (6).get_bit(1) == no
+assert (6).get_bit(2) == yes
+assert (6).get_bit(3) == yes
+assert (6).get_bit(4) == no
 
 ```
 ## Int.hex
@@ -500,8 +472,7 @@ prefix | `Bool` | Whether to include a "0x" prefix.  | `yes`
 
 **Example:**
 ```tomo
->> (255).hex(digits=4, uppercase=yes, prefix=yes)
-= "0x00FF"
+assert (255).hex(digits=4, uppercase=yes, prefix=yes) == "0x00FF"
 
 ```
 ## Int.is_between
@@ -523,12 +494,9 @@ high | `Int` | The upper bound to check (inclusive).  | -
 
 **Example:**
 ```tomo
->> (7).is_between(1, 10)
-= yes
->> (7).is_between(100, 200)
-= no
->> (7).is_between(1, 7)
-= yes
+assert (7).is_between(1, 10) == yes
+assert (7).is_between(100, 200) == no
+assert (7).is_between(1, 7) == yes
 
 ```
 ## Int.is_prime
@@ -551,10 +519,8 @@ reps | `Int` | The number of repetitions for primality tests.  | `50`
 
 **Example:**
 ```tomo
->> (7).is_prime()
-= yes
->> (6).is_prime()
-= no
+assert (7).is_prime() == yes
+assert (6).is_prime() == no
 
 ```
 ## Int.next_prime
@@ -576,8 +542,7 @@ x | `Int` | The integer after which to find the next prime.  | -
 
 **Example:**
 ```tomo
->> (11).next_prime()
-= 13
+assert (11).next_prime() == 13
 
 ```
 ## Int.octal
@@ -599,8 +564,7 @@ prefix | `Bool` | Whether to include a "0o" prefix.  | `yes`
 
 **Example:**
 ```tomo
->> (64).octal(digits=4, prefix=yes)
-= "0o0100"
+assert (64).octal(digits=4, prefix=yes) == "0o0100"
 
 ```
 ## Int.onward
@@ -625,8 +589,7 @@ nums : &[Int] = &[]
 for i in (5).onward()
 nums.insert(i)
 stop if i == 10
->> nums[]
-= [5, 6, 7, 8, 9, 10]
+assert nums[] == [5, 6, 7, 8, 9, 10]
 
 ```
 ## Int.parse
@@ -647,26 +610,18 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Int.parse("123")
-= 123 : Int?
->> Int.parse("0xFF")
-= 255 : Int?
-
->> Int.parse("123xyz")
-= none
+assert Int.parse("123") == 123
+assert Int.parse("0xFF") == 255
+assert Int.parse("123xyz") == none
 remainder : Text
->> Int.parse("123xyz", &remainder)
-= 123 : Int?
->> remainder
-= "xyz"
+assert Int.parse("123xyz", &remainder) == 123
+assert remainder == "xyz"
 
 # Can't parse:
->> Int.parse("asdf")
-= none : Int?
+assert Int.parse("asdf") == none
 
 # Outside valid range:
->> Int8.parse("9999999")
-= none : Int8?
+assert Int8.parse("9999999") == none
 
 ```
 ## Int.prev_prime
@@ -688,8 +643,7 @@ x | `Int` | The integer before which to find the previous prime.  | -
 
 **Example:**
 ```tomo
->> (11).prev_prime()
-= 7
+assert (11).prev_prime() == 7
 
 ```
 ## Int.sqrt
@@ -709,10 +663,8 @@ x | `Int` | The integer whose square root is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (16).sqrt()
-= 4
->> (17).sqrt()
-= 4
+assert (16).sqrt() == 4
+assert (17).sqrt() == 4
 
 ```
 ## Int.to
@@ -734,15 +686,16 @@ step | `Int?` | An optional step size to use. If unspecified or `none`, the step
 
 **Example:**
 ```tomo
->> (2).to(5)
-= func(->Int?)
->> [x for x in (2).to(5)]
-= [2, 3, 4, 5]
->> [x for x in (5).to(2)]
-= [5, 4, 3, 2]
+iter := (2).to(5)
+assert iter() == 2
+assert iter() == 3
+assert iter() == 4
+assert iter() == 5
+assert iter() == none
 
->> [x for x in (2).to(5, step=2)]
-= [2, 4]
+assert [x for x in (2).to(5)] == [2, 3, 4, 5]
+assert [x for x in (5).to(2)] == [5, 4, 3, 2]
+assert [x for x in (2).to(5, step=2)] == [2, 4]
 
 ```
 
@@ -765,14 +718,9 @@ by | `func(x,y:&T->Int32)` | The comparison function used to determine order. If
 
 **Example:**
 ```tomo
->> [1, 3, 5, 7, 9].binary_search(5)
-= 3
-
->> [1, 3, 5, 7, 9].binary_search(-999)
-= 1
-
->> [1, 3, 5, 7, 9].binary_search(999)
-= 6
+assert [1, 3, 5, 7, 9].binary_search(5) == 3
+assert [1, 3, 5, 7, 9].binary_search(-999) == 1
+assert [1, 3, 5, 7, 9].binary_search(999) == 6
 
 ```
 ## List.by
@@ -793,8 +741,7 @@ step | `Int` | The step value for selecting elements.  | -
 
 **Example:**
 ```tomo
->> [1, 2, 3, 4, 5, 6].by(2)
-= [1, 3, 5]
+assert [1, 2, 3, 4, 5, 6].by(2) == [1, 3, 5]
 
 ```
 ## List.clear
@@ -814,7 +761,7 @@ list | `@[T]` | The mutable reference to the list to be cleared.  | -
 
 **Example:**
 ```tomo
->> my_list.clear()
+my_list.clear()
 
 ```
 ## List.counts
@@ -834,8 +781,7 @@ list | `[T]` | The list to count elements in.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 30, 30].counts()
-= {10=1, 20=1, 30=3}
+assert [10, 20, 30, 30, 30].counts() == {10=1, 20=1, 30=3}
 
 ```
 ## List.find
@@ -856,11 +802,8 @@ target | `T` | The item to search for.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].find(20)
-= 2 : Int?
-
->> [10, 20, 30, 40, 50].find(9999)
-= none : Int?
+assert [10, 20, 30, 40, 50].find(20) == 2
+assert [10, 20, 30, 40, 50].find(9999) == none
 
 ```
 ## List.from
@@ -881,8 +824,7 @@ first | `Int` | The index to start from.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].from(3)
-= [30, 40, 50]
+assert [10, 20, 30, 40, 50].from(3) == [30, 40, 50]
 
 ```
 ## List.has
@@ -903,8 +845,7 @@ target | `T` | The element to check for.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30].has(20)
-= yes
+assert [10, 20, 30].has(20) == yes
 
 ```
 ## List.heap_pop
@@ -925,10 +866,9 @@ by | `func(x,y:&T->Int32)` | The comparison function used to determine order. If
 
 **Example:**
 ```tomo
->> my_heap := [30, 10, 20]
->> my_heap.heapify()
->> my_heap.heap_pop()
-= 10
+my_heap := [30, 10, 20]
+my_heap.heapify()
+assert my_heap.heap_pop() == 10
 
 ```
 ## List.heap_push
@@ -950,7 +890,7 @@ by | `` | The comparison function used to determine order. If not specified, the
 
 **Example:**
 ```tomo
->> my_heap.heap_push(10)
+my_heap.heap_push(10)
 
 ```
 ## List.heapify
@@ -971,8 +911,8 @@ by | `func(x,y:&T->Int32)` | The comparison function used to determine order. If
 
 **Example:**
 ```tomo
->> my_heap := [30, 10, 20]
->> my_heap.heapify()
+my_heap := [30, 10, 20]
+my_heap.heapify()
 
 ```
 ## List.insert
@@ -996,14 +936,12 @@ at | `Int` | The index at which to insert the item.  | `0`
 
 **Example:**
 ```tomo
->> list := [10, 20]
->> list.insert(30)
->> list
-= [10, 20, 30]
+list := [10, 20]
+list.insert(30)
+assert list == [10, 20, 30]
 
->> list.insert(999, at=2)
->> list
-= [10, 999, 20, 30]
+list.insert(999, at=2)
+assert list == [10, 999, 20, 30]
 
 ```
 ## List.insert_all
@@ -1029,12 +967,10 @@ at | `Int` | The index at which to insert the item.  | `0`
 ```tomo
 list := [10, 20]
 list.insert_all([30, 40])
->> list
-= [10, 20, 30, 40]
+assert list == [10, 20, 30, 40]
 
 list.insert_all([99, 100], at=2)
->> list
-= [10, 99, 100, 20, 30, 40]
+assert list == [10, 99, 100, 20, 30, 40]
 
 ```
 ## List.pop
@@ -1057,17 +993,13 @@ index | `Int` | The index from which to remove the item.  | `-1`
 
 **Example:**
 ```tomo
->> list := [10, 20, 30, 40]
+list := &[10, 20, 30, 40]
 
->> list.pop()
-= 40
->> list
-= &[10, 20, 30]
+assert list.pop() == 40
+assert list[] == [10, 20, 30]
 
->> list.pop(index=2)
-= 20
->> list
-= &[10, 30]
+assert list.pop(index=2) == 20
+assert list[] == [10, 30]
 
 ```
 ## List.random
@@ -1088,8 +1020,7 @@ random | `func(min,max:Int64->Int64)?` | If provided, this function will be used
 
 **Example:**
 ```tomo
->> [10, 20, 30].random()
-= 20
+assert [10, 20, 30].random() == 20
 
 ```
 ## List.remove_at
@@ -1115,12 +1046,10 @@ count | `Int` | The number of elements to remove.  | `1`
 ```tomo
 list := [10, 20, 30, 40, 50]
 list.remove_at(2)
->> list
-= [10, 30, 40, 50]
+assert list == [10, 30, 40, 50]
 
 list.remove_at(2, count=2)
->> list
-= [10, 50]
+assert list == [10, 50]
 
 ```
 ## List.remove_item
@@ -1146,12 +1075,10 @@ max_count | `Int` | The maximum number of occurrences to remove.  | `-1`
 ```tomo
 list := [10, 20, 10, 20, 30]
 list.remove_item(10)
->> list
-= [20, 20, 30]
+assert list == [20, 20, 30]
 
 list.remove_item(20, max_count=1)
->> list
-= [20, 30]
+assert list == [20, 30]
 
 ```
 ## List.reversed
@@ -1171,8 +1098,7 @@ list | `[T]` | The list to be reversed.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30].reversed()
-= [30, 20, 10]
+assert [10, 20, 30].reversed() == [30, 20, 10]
 
 ```
 ## List.sample
@@ -1197,8 +1123,7 @@ random | `func(->Num)?` | If provided, this function will be used to get random
 
 **Example:**
 ```tomo
->> [10, 20, 30].sample(2, weights=[90%, 5%, 5%])
-= [10, 10]
+assert [10, 20, 30].sample(2, weights=[90%, 5%, 5%]) == [10, 10]
 
 ```
 ## List.shuffle
@@ -1219,7 +1144,7 @@ random | `func(min,max:Int64->Int64)?` | If provided, this function will be used
 
 **Example:**
 ```tomo
->> list.shuffle()
+list.shuffle()
 
 ```
 ## List.shuffled
@@ -1240,8 +1165,7 @@ random | `func(min,max:Int64->Int64)?` | If provided, this function will be used
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40].shuffled()
-= [40, 10, 30, 20]
+assert [10, 20, 30, 40].shuffled() == [40, 10, 30, 20]
 
 ```
 ## List.slice
@@ -1263,11 +1187,8 @@ to | `Int` | The last index to include.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].slice(2, 4)
-= [20, 30, 40]
-
->> [10, 20, 30, 40, 50].slice(-3, -2)
-= [30, 40]
+assert [10, 20, 30, 40, 50].slice(2, 4) == [20, 30, 40]
+assert [10, 20, 30, 40, 50].slice(-3, -2) == [30, 40]
 
 ```
 ## List.sort
@@ -1290,12 +1211,10 @@ by | `` | The comparison function used to determine order. If not specified, the
 ```tomo
 list := [40, 10, -30, 20]
 list.sort()
->> list
-= [-30, 10, 20, 40]
+assert list == [-30, 10, 20, 40]
 
 list.sort(func(a,b:&Int): a.abs() <> b.abs())
->> list
-= [10, 20, -30, 40]
+assert list == [10, 20, -30, 40]
 
 ```
 ## List.sorted
@@ -1316,11 +1235,10 @@ by | `` | The comparison function used to determine order. If not specified, the
 
 **Example:**
 ```tomo
->> [40, 10, -30, 20].sorted()
-= [-30, 10, 20, 40]
-
->> [40, 10, -30, 20].sorted(func(a,b:&Int): a.abs() <> b.abs())
-= [10, 20, -30, 40]
+assert [40, 10, -30, 20].sorted() == [-30, 10, 20, 40]
+assert [40, 10, -30, 20].sorted(
+   func(a,b:&Int): a.abs() <> b.abs()
+) == [10, 20, -30, 40]
 
 ```
 ## List.to
@@ -1341,32 +1259,28 @@ last | `Int` | The index up to which elements should be included.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].to(3)
-= [10, 20, 30]
-
->> [10, 20, 30, 40, 50].to(-2)
-= [10, 20, 30, 40]
+assert [10, 20, 30, 40, 50].to(3) == [10, 20, 30]
+assert [10, 20, 30, 40, 50].to(-2) == [10, 20, 30, 40]
 
 ```
 ## List.unique
 
 ```tomo
-List.unique : func(list: [T] -> |T|)
+List.unique : func(list: [T] -> [T])
 ```
 
-Returns a Set that contains the unique elements of the list.
+Returns a list of the unique elements of the list.
 
 Argument | Type | Description | Default
 ---------|------|-------------|---------
 list | `[T]` | The list to process.  | -
 
-**Return:** A set containing only unique elements from the list.
+**Return:** A list of the unique elements from the list.
 
 
 **Example:**
 ```tomo
->> [10, 20, 10, 10, 30].unique()
-= {10, 20, 30}
+assert [10, 20, 10, 10, 30].unique() == [10, 20, 30]
 
 ```
 ## List.where
@@ -1387,10 +1301,8 @@ predicate | `func(item:&T -> Bool)` | A function that returns `yes` if the item'
 
 **Example:**
 ```tomo
->> [4, 5, 6].where(func(i:&Int): i.is_prime())
-= 5 : Int?
->> [4, 6, 8].find(func(i:&Int): i.is_prime())
-= none : Int?
+assert [4, 5, 6].where(func(i:&Int): i.is_prime()) == 5
+assert [4, 6, 8].find(func(i:&Int): i.is_prime()) == none
 
 ```
 
@@ -1524,8 +1436,7 @@ n | `Num` | The number whose absolute value is to be computed.  | -
 
 **Example:**
 ```tomo
->> (-3.5).abs()
-= 3.5
+assert (-3.5).abs() == 3.5
 
 ```
 ## Num.acos
@@ -1545,8 +1456,7 @@ x | `Num` | The number for which the arc cosine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).acos() // -> (π/2)
-= 1.5708
+assert (0.0).acos() == 1.5708
 
 ```
 ## Num.acosh
@@ -1566,8 +1476,7 @@ x | `Num` | The number for which the inverse hyperbolic cosine is to be calculat
 
 **Example:**
 ```tomo
->> (1.0).acosh()
-= 0
+assert (1.0).acosh() == 0
 
 ```
 ## Num.asin
@@ -1587,8 +1496,7 @@ x | `Num` | The number for which the arc sine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.5).asin()  // -> (π/6)
-= 0.5236
+assert (0.5).asin() == 0.5236
 
 ```
 ## Num.asinh
@@ -1608,8 +1516,7 @@ x | `Num` | The number for which the inverse hyperbolic sine is to be calculated
 
 **Example:**
 ```tomo
->> (0.0).asinh()
-= 0
+assert (0.0).asinh() == 0
 
 ```
 ## Num.atan
@@ -1629,8 +1536,7 @@ x | `Num` | The number for which the arc tangent is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).atan() // -> (π/4)
-= 0.7854
+assert (1.0).atan() == 0.7854
 
 ```
 ## Num.atan2
@@ -1651,8 +1557,7 @@ y | `Num` | The denominator.  | -
 
 **Example:**
 ```tomo
->> Num.atan2(1, 1) // -> (π/4)
-= 0.7854
+assert Num.atan2(1, 1) == 0.7854
 
 ```
 ## Num.atanh
@@ -1672,8 +1577,7 @@ x | `Num` | The number for which the inverse hyperbolic tangent is to be calcula
 
 **Example:**
 ```tomo
->> (0.5).atanh()
-= 0.5493
+assert (0.5).atanh() == 0.5493
 
 ```
 ## Num.cbrt
@@ -1693,8 +1597,7 @@ x | `Num` | The number for which the cube root is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (27.0).cbrt()
-= 3
+assert (27.0).cbrt() == 3
 
 ```
 ## Num.ceil
@@ -1714,8 +1617,7 @@ x | `Num` | The number to be rounded up.  | -
 
 **Example:**
 ```tomo
->> (3.2).ceil()
-= 4
+assert (3.2).ceil() == 4
 
 ```
 ## Num.clamped
@@ -1737,8 +1639,7 @@ high | `Num` | The highest value the result can take.  | -
 
 **Example:**
 ```tomo
->> (2.5).clamped(5.5, 10.5)
-= 5.5
+assert (2.5).clamped(5.5, 10.5) == 5.5
 
 ```
 ## Num.copysign
@@ -1759,8 +1660,7 @@ y | `Num` | The number whose sign will be copied.  | -
 
 **Example:**
 ```tomo
->> (3.0).copysign(-1)
-= -3
+assert (3.0).copysign(-1) == -3
 
 ```
 ## Num.cos
@@ -1780,8 +1680,7 @@ x | `Num` | The angle in radians.  | -
 
 **Example:**
 ```tomo
->> (0.0).cos()
-= 1
+assert (0.0).cos() == 1
 
 ```
 ## Num.cosh
@@ -1801,8 +1700,7 @@ x | `Num` | The number for which the hyperbolic cosine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).cosh()
-= 1
+assert (0.0).cosh() == 1
 
 ```
 ## Num.erf
@@ -1822,8 +1720,7 @@ x | `Num` | The number for which the error function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).erf()
-= 0
+assert (0.0).erf() == 0
 
 ```
 ## Num.erfc
@@ -1843,8 +1740,7 @@ x | `Num` | The number for which the complementary error function is to be calcu
 
 **Example:**
 ```tomo
->> (0.0).erfc()
-= 1
+assert (0.0).erfc() == 1
 
 ```
 ## Num.exp
@@ -1864,8 +1760,7 @@ x | `Num` | The exponent.  | -
 
 **Example:**
 ```tomo
->> (1.0).exp()
-= 2.7183
+assert (1.0).exp() == 2.7183
 
 ```
 ## Num.exp2
@@ -1885,8 +1780,7 @@ x | `Num` | The exponent.  | -
 
 **Example:**
 ```tomo
->> (3.0).exp2()
-= 8
+assert (3.0).exp2() == 8
 
 ```
 ## Num.expm1
@@ -1906,8 +1800,7 @@ x | `Num` | The exponent.  | -
 
 **Example:**
 ```tomo
->> (1.0).expm1()
-= 1.7183
+assert (1.0).expm1() == 1.7183
 
 ```
 ## Num.fdim
@@ -1930,8 +1823,7 @@ y | `Num` | The second number.  | -
 ```tomo
 fd
 
->> (5.0).fdim(3)
-= 2
+assert (5.0).fdim(3) == 2
 
 ```
 ## Num.floor
@@ -1951,8 +1843,7 @@ x | `Num` | The number to be rounded down.  | -
 
 **Example:**
 ```tomo
->> (3.7).floor()
-= 3
+assert (3.7).floor() == 3
 
 ```
 ## Num.hypot
@@ -1973,8 +1864,7 @@ y | `Num` | The second number.  | -
 
 **Example:**
 ```tomo
->> Num.hypot(3, 4)
-= 5
+assert Num.hypot(3, 4) == 5
 
 ```
 ## Num.is_between
@@ -1996,12 +1886,9 @@ high | `Num` | The upper bound to check (inclusive).  | -
 
 **Example:**
 ```tomo
->> (7.5).is_between(1, 10)
-= yes
->> (7.5).is_between(100, 200)
-= no
->> (7.5).is_between(1, 7.5)
-= yes
+assert (7.5).is_between(1, 10) == yes
+assert (7.5).is_between(100, 200) == no
+assert (7.5).is_between(1, 7.5) == yes
 
 ```
 ## Num.isfinite
@@ -2021,10 +1908,8 @@ n | `Num` | The number to be checked.  | -
 
 **Example:**
 ```tomo
->> (1.0).isfinite()
-= yes
->> Num.INF.isfinite()
-= no
+assert (1.0).isfinite() == yes
+assert Num.INF.isfinite() == no
 
 ```
 ## Num.isinf
@@ -2044,10 +1929,8 @@ n | `Num` | The number to be checked.  | -
 
 **Example:**
 ```tomo
->> Num.INF.isinf()
-= yes
->> (1.0).isinf()
-= no
+assert Num.INF.isinf() == yes
+assert (1.0).isinf() == no
 
 ```
 ## Num.j0
@@ -2067,8 +1950,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).j0()
-= 1
+assert (0.0).j0() == 1
 
 ```
 ## Num.j1
@@ -2088,8 +1970,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).j1()
-= 0
+assert (0.0).j1() == 0
 
 ```
 ## Num.log
@@ -2109,8 +1990,7 @@ x | `Num` | The number for which the natural logarithm is to be calculated.  | -
 
 **Example:**
 ```tomo
->> Num.E.log()
-= 1
+assert Num.E.log() == 1
 
 ```
 ## Num.log10
@@ -2130,8 +2010,7 @@ x | `Num` | The number for which the base-10 logarithm is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (100.0).log10()
-= 2
+assert (100.0).log10() == 2
 
 ```
 ## Num.log1p
@@ -2151,8 +2030,7 @@ x | `Num` | The number for which $\log(1 + x)$ is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).log1p()
-= 0.6931
+assert (1.0).log1p() == 0.6931
 
 ```
 ## Num.log2
@@ -2172,8 +2050,7 @@ x | `Num` | The number for which the base-2 logarithm is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (8.0).log2()
-= 3
+assert (8.0).log2() == 3
 
 ```
 ## Num.logb
@@ -2193,8 +2070,7 @@ x | `Num` | The number for which the binary exponent is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (8.0).logb()
-= 3
+assert (8.0).logb() == 3
 
 ```
 ## Num.mix
@@ -2216,10 +2092,8 @@ y | `Num` | The ending number.  | -
 
 **Example:**
 ```tomo
->> (0.5).mix(10, 20)
-= 15
->> (0.25).mix(10, 20)
-= 12.5
+assert (0.5).mix(10, 20) == 15
+assert (0.25).mix(10, 20) == 12.5
 
 ```
 ## Num.near
@@ -2242,14 +2116,9 @@ min_epsilon | `Num` | The absolute tolerance. Default is `1e-9`.  | `1e-9`
 
 **Example:**
 ```tomo
->> (1.0).near(1.000000001)
-= yes
-
->> (100.0).near(110, ratio=0.1)
-= yes
-
->> (5.0).near(5.1, min_epsilon=0.1)
-= yes
+assert (1.0).near(1.000000001) == yes
+assert (100.0).near(110, ratio=0.1) == yes
+assert (5.0).near(5.1, min_epsilon=0.1) == yes
 
 ```
 ## Num.nextafter
@@ -2270,8 +2139,7 @@ y | `Num` | The direction towards which to find the next representable value.  |
 
 **Example:**
 ```tomo
->> (1.0).nextafter(1.1)
-= 1.0000000000000002
+assert (1.0).nextafter(1.1) == 1.0000000000000002
 
 ```
 ## Num.parse
@@ -2292,18 +2160,12 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Num.parse("3.14")
-= 3.14 : Num?
->> Num.parse("1e3")
-= 1000 : Num?
-
->> Num.parse("1.5junk")
-= none : Num?
+assert Num.parse("3.14") == 3.14
+assert Num.parse("1e3") == 1000
+assert Num.parse("1.5junk") == none
 remainder : Text
->> Num.parse("1.5junk", &remainder)
-= 1.5 : Num?
->> remainder
-= "junk"
+assert Num.parse("1.5junk", &remainder) == 1.5
+assert remainder == "junk"
 
 ```
 ## Num.percent
@@ -2324,14 +2186,10 @@ precision | `Num` | Round the percentage to this precision level.  | `0.01`
 
 **Example:**
 ```tomo
->> (0.5).percent()
-= "50%"
->> (1./3.).percent(2)
-= "33.33%"
->> (1./3.).percent(2, precision=0.0001)
-= "33.3333%"
->> (1./3.).percent(2, precision=10.)
-= "30%"
+assert (0.5).percent() == "50%"
+assert (1./3.).percent(2) == "33.33%"
+assert (1./3.).percent(2, precision=0.0001) == "33.3333%"
+assert (1./3.).percent(2, precision=10.) == "30%"
 
 ```
 ## Num.rint
@@ -2351,10 +2209,8 @@ x | `Num` | The number to be rounded.  | -
 
 **Example:**
 ```tomo
->> (3.5).rint()
-= 4
->> (2.5).rint()
-= 2
+assert (3.5).rint() == 4
+assert (2.5).rint() == 2
 
 ```
 ## Num.round
@@ -2374,10 +2230,8 @@ x | `Num` | The number to be rounded.  | -
 
 **Example:**
 ```tomo
->> (2.3).round()
-= 2
->> (2.7).round()
-= 3
+assert (2.3).round() == 2
+assert (2.7).round() == 3
 
 ```
 ## Num.significand
@@ -2397,8 +2251,7 @@ x | `Num` | The number from which to extract the significand.  | -
 
 **Example:**
 ```tomo
->> (1234.567).significand()
-= 0.1234567
+assert (1234.567).significand() == 0.1234567
 
 ```
 ## Num.sin
@@ -2418,8 +2271,7 @@ x | `Num` | The angle in radians.  | -
 
 **Example:**
 ```tomo
->> (0.0).sin()
-= 0
+assert (0.0).sin() == 0
 
 ```
 ## Num.sinh
@@ -2439,8 +2291,7 @@ x | `Num` | The number for which the hyperbolic sine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).sinh()
-= 0
+assert (0.0).sinh() == 0
 
 ```
 ## Num.sqrt
@@ -2460,8 +2311,7 @@ x | `Num` | The number for which the square root is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (16.0).sqrt()
-= 4
+assert (16.0).sqrt() == 4
 
 ```
 ## Num.tan
@@ -2481,8 +2331,7 @@ x | `Num` | The angle in radians.  | -
 
 **Example:**
 ```tomo
->> (0.0).tan()
-= 0
+assert (0.0).tan() == 0
 
 ```
 ## Num.tanh
@@ -2502,8 +2351,7 @@ x | `Num` | The number for which the hyperbolic tangent is to be calculated.  |
 
 **Example:**
 ```tomo
->> (0.0).tanh()
-= 0
+assert (0.0).tanh() == 0
 
 ```
 ## Num.tgamma
@@ -2523,8 +2371,7 @@ x | `Num` | The number for which the gamma function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).tgamma()
-= 1
+assert (1.0).tgamma() == 1
 
 ```
 ## Num.trunc
@@ -2544,10 +2391,8 @@ x | `Num` | The number to be truncated.  | -
 
 **Example:**
 ```tomo
->> (3.7).trunc()
-= 3
->> (-3.7).trunc()
-= -3
+assert (3.7).trunc() == 3
+assert (-3.7).trunc() == -3
 
 ```
 ## Num.with_precision
@@ -2568,12 +2413,9 @@ precision | `Num` | The precision to which the number should be rounded.  | -
 
 **Example:**
 ```tomo
->> (0.1234567).with_precision(0.01)
-= 0.12
->> (123456.).with_precision(100)
-= 123500
->> (1234567.).with_precision(5)
-= 1234565
+assert (0.1234567).with_precision(0.01) == 0.12
+assert (123456.).with_precision(100) == 123500
+assert (1234567.).with_precision(5) == 1234565
 
 ```
 ## Num.y0
@@ -2593,8 +2435,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).y0()
-= -0.7652
+assert (1.0).y0() == -0.7652
 
 ```
 ## Num.y1
@@ -2614,8 +2455,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).y1()
-= 0.4401
+assert (1.0).y1() == 0.4401
 
 ```
 
@@ -2638,10 +2478,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).accessed()
-= 1704221100?
->> (./not-a-file).accessed()
-= none
+assert (./file.txt).accessed() == 1704221100
+assert (./not-a-file).accessed() == none
 
 ```
 ## Path.append
@@ -2705,8 +2543,7 @@ path | `Path` | The path of the file or directory.  | -
 
 **Example:**
 ```tomo
->> (./path/to/file.txt).base_name()
-= "file.txt"
+assert (./path/to/file.txt).base_name() == "file.txt"
 
 ```
 ## Path.by_line
@@ -2755,12 +2592,9 @@ path | `Path` | The path of the file to check.  | -
 
 **Example:**
 ```tomo
->> (/bin/sh).can_execute()
-= yes
->> (/usr/include/stdlib.h).can_execute()
-= no
->> (/non/existant/file).can_execute()
-= no
+assert (/bin/sh).can_execute() == yes
+assert (/usr/include/stdlib.h).can_execute() == no
+assert (/non/existant/file).can_execute() == no
 
 ```
 ## Path.can_read
@@ -2780,12 +2614,9 @@ path | `Path` | The path of the file to check.  | -
 
 **Example:**
 ```tomo
->> (/usr/include/stdlib.h).can_read()
-= yes
->> (/etc/shadow).can_read()
-= no
->> (/non/existant/file).can_read()
-= no
+assert (/usr/include/stdlib.h).can_read() == yes
+assert (/etc/shadow).can_read() == no
+assert (/non/existant/file).can_read() == no
 
 ```
 ## Path.can_write
@@ -2805,12 +2636,9 @@ path | `Path` | The path of the file to check.  | -
 
 **Example:**
 ```tomo
->> (/tmp).can_write()
-= yes
->> (/etc/passwd).can_write()
-= no
->> (/non/existant/file).can_write()
-= no
+assert (/tmp).can_write() == yes
+assert (/etc/passwd).can_write() == no
+assert (/non/existant/file).can_write() == no
 
 ```
 ## Path.changed
@@ -2833,10 +2661,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).changed()
-= 1704221100?
->> (./not-a-file).changed()
-= none
+assert (./file.txt).changed() == 1704221100
+assert (./not-a-file).changed() == none
 
 ```
 ## Path.child
@@ -2857,8 +2683,7 @@ child | `Text` | The name of a child file or directory.  | -
 
 **Example:**
 ```tomo
->> (./directory).child("file.txt")
-= (./directory/file.txt)
+assert (./directory).child("file.txt") == (./directory/file.txt)
 
 ```
 ## Path.children
@@ -2879,8 +2704,7 @@ include_hidden | `` | Whether to include hidden files, which start with a `.`.
 
 **Example:**
 ```tomo
->> (./directory).children(include_hidden=yes)
-= [".git", "foo.txt"]
+assert (./directory).children(include_hidden=yes) == [".git", "foo.txt"]
 
 ```
 ## Path.create_directory
@@ -2918,8 +2742,7 @@ Creates a new directory at the specified path with the given permissions. If any
 
 **Example:**
 ```tomo
->> Path.current_dir()
-= (/home/user/tomo)
+assert Path.current_dir() == (/home/user/tomo)
 
 ```
 ## Path.exists
@@ -2939,8 +2762,7 @@ path | `Path` | The path to check.  | -
 
 **Example:**
 ```tomo
->> (/).exists()
-= yes
+assert (/).exists() == yes
 
 ```
 ## Path.expand_home
@@ -2960,10 +2782,10 @@ path | `Path` | The path to expand.  | -
 
 **Example:**
 ```tomo
->> (~/foo).expand_home() # Assume current user is 'user'
-= /home/user/foo
->> (/foo).expand_home() # No change
-= /foo
+# Assume current user is 'user'
+assert (~/foo).expand_home() == (/home/user/foo)
+# No change
+assert (/foo).expand_home() == (/foo)
 
 ```
 ## Path.extension
@@ -2984,14 +2806,10 @@ full | `Bool` | Whether to return everything after the first `.` in the base nam
 
 **Example:**
 ```tomo
->> (./file.tar.gz).extension()
-= "tar.gz"
->> (./file.tar.gz).extension(full=no)
-= "gz"
->> (/foo).extension()
-= ""
->> (./.git).extension()
-= ""
+assert (./file.tar.gz).extension() == "tar.gz"
+assert (./file.tar.gz).extension(full=no) == "gz"
+assert (/foo).extension() == ""
+assert (./.git).extension() == ""
 
 ```
 ## Path.files
@@ -3012,8 +2830,7 @@ include_hidden | `Bool` | Whether to include hidden files.  | `no`
 
 **Example:**
 ```tomo
->> (./directory).files(include_hidden=yes)
-= [(./directory/file1.txt), (./directory/file2.txt)]
+assert (./directory).files(include_hidden=yes) == [(./directory/file1.txt), (./directory/file2.txt)]
 
 ```
 ## Path.from_components
@@ -3033,12 +2850,9 @@ components | `[Text]` | A list of path components.  | -
 
 **Example:**
 ```tomo
->> Path.from_components(["/", "usr", "include"])
-= /usr/include
->> Path.from_components(["foo.txt"])
-= ./foo.txt
->> Path.from_components(["~", ".local"])
-= ~/.local
+assert Path.from_components(["/", "usr", "include"]) == (/usr/include)
+assert Path.from_components(["foo.txt"]) == (./foo.txt)
+assert Path.from_components(["~", ".local"]) == (~/.local)
 
 ```
 ## Path.glob
@@ -3065,21 +2879,13 @@ path | `Path` | The path of the directory which may contain special globbing cha
 **Example:**
 ```tomo
 # Current directory includes: foo.txt, baz.txt, qux.jpg, .hidden
->> (./*).glob()
-= [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
->> (./*.txt).glob()
-= [(./foo.txt), (./baz.txt)]
-
->> (./*.{txt,jpg}).glob()
-= [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
->> (./.*).glob()
-= [(./.hidden)]
+assert (./*).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+assert (./*.txt).glob() == [(./foo.txt), (./baz.txt)]
+assert (./*.{txt,jpg}).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+assert (./.*).glob() == [(./.hidden)]
 
 # Globs with no matches return an empty list:
->> (./*.xxx).glob()
-= []
+assert (./*.xxx).glob() == []
 
 ```
 ## Path.group
@@ -3100,10 +2906,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (/bin).group()
-= "root"
->> (/non/existent/file).group()
-= none
+assert (/bin).group() == "root"
+assert (/non/existent/file).group() == none
 
 ```
 ## Path.has_extension
@@ -3124,14 +2928,10 @@ extension | `Text` | A file extension (leading `.` is optional). If empty, the c
 
 **Example:**
 ```tomo
->> (/foo.txt).has_extension("txt")
-= yes
->> (/foo.txt).has_extension(".txt")
-= yes
->> (/foo.tar.gz).has_extension("gz")
-= yes
->> (/foo.tar.gz).has_extension("zip")
-= no
+assert (/foo.txt).has_extension("txt") == yes
+assert (/foo.txt).has_extension(".txt") == yes
+assert (/foo.tar.gz).has_extension("gz") == yes
+assert (/foo.tar.gz).has_extension("zip") == no
 
 ```
 ## Path.is_directory
@@ -3152,11 +2952,8 @@ follow_symlinks | `` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./directory/).is_directory()
-= yes
-
->> (./file.txt).is_directory()
-= no
+assert (./directory/).is_directory() == yes
+assert (./file.txt).is_directory() == no
 
 ```
 ## Path.is_file
@@ -3177,11 +2974,8 @@ follow_symlinks | `` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).is_file()
-= yes
-
->> (./directory/).is_file()
-= no
+assert (./file.txt).is_file() == yes
+assert (./directory/).is_file() == no
 
 ```
 ## Path.is_socket
@@ -3202,8 +2996,7 @@ follow_symlinks | `` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./socket).is_socket()
-= yes
+assert (./socket).is_socket() == yes
 
 ```
 ## Path.is_symlink
@@ -3223,8 +3016,7 @@ path | `Path` | The path to check.  | -
 
 **Example:**
 ```tomo
->> (./link).is_symlink()
-= yes
+assert (./link).is_symlink() == yes
 
 ```
 ## Path.modified
@@ -3245,10 +3037,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).modified()
-= 1704221100?
->> (./not-a-file).modified()
-= none
+assert (./file.txt).modified() == 1704221100
+assert (./not-a-file).modified() == none
 
 ```
 ## Path.owner
@@ -3269,10 +3059,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (/bin).owner()
-= "root"
->> (/non/existent/file).owner()
-= none
+assert (/bin).owner() == "root"
+assert (/non/existent/file).owner() == none
 
 ```
 ## Path.parent
@@ -3292,8 +3080,7 @@ path | `Path` | The path of the file or directory.  | -
 
 **Example:**
 ```tomo
->> (./path/to/file.txt).parent()
-= (./path/to/)
+assert (./path/to/file.txt).parent() == (./path/to/)
 
 ```
 ## Path.read
@@ -3313,11 +3100,8 @@ path | `Path` | The path of the file to read.  | -
 
 **Example:**
 ```tomo
->> (./hello.txt).read()
-= "Hello"?
-
->> (./nosuchfile.xxx).read()
-= none
+assert (./hello.txt).read() == "Hello"
+assert (./nosuchfile.xxx).read() == none
 
 ```
 ## Path.read_bytes
@@ -3338,11 +3122,8 @@ limit | `Int?` | A limit to how many bytes should be read.  | `none`
 
 **Example:**
 ```tomo
->> (./hello.txt).read()
-= [72, 101, 108, 108, 111]?
-
->> (./nosuchfile.xxx).read()
-= none
+assert (./hello.txt).read() == [72, 101, 108, 108, 111]
+assert (./nosuchfile.xxx).read() == none
 
 ```
 ## Path.relative_to
@@ -3363,8 +3144,7 @@ relative_to | `` | The base path for the relative path.  | `(./)`
 
 **Example:**
 ```tomo
->> (./path/to/file.txt).relative(relative_to=(./path))
-= (./to/file.txt)
+assert (./path/to/file.txt).relative(relative_to=(./path)) == (./to/file.txt)
 
 ```
 ## Path.remove
@@ -3406,11 +3186,8 @@ relative_to | `` | The base path for resolution.  | `(./)`
 
 **Example:**
 ```tomo
->> (~/foo).resolved()
-= (/home/user/foo)
-
->> (./path/to/file.txt).resolved(relative_to=(/foo))
-= (/foo/path/to/file.txt)
+assert (~/foo).resolved() == (/home/user/foo)
+assert (./path/to/file.txt).resolved(relative_to=(/foo)) == (/foo/path/to/file.txt)
 
 ```
 ## Path.set_owner
@@ -3454,8 +3231,7 @@ name | `Text` | The name of a sibling file or directory.  | -
 
 **Example:**
 ```tomo
->> (/foo/baz).sibling("doop")
-= (/foo/doop)
+assert (/foo/baz).sibling("doop") == (/foo/doop)
 
 ```
 ## Path.subdirectories
@@ -3476,11 +3252,8 @@ include_hidden | `` | Whether to include hidden subdirectories.  | `no`
 
 **Example:**
 ```tomo
->> (./directory).subdirectories()
-= [(./directory/subdir1), (./directory/subdir2)]
-
->> (./directory).subdirectories(include_hidden=yes)
-= [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
+assert (./directory).subdirectories() == [(./directory/subdir1), (./directory/subdir2)]
+assert (./directory).subdirectories(include_hidden=yes) == [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
 
 ```
 ## Path.unique_directory
@@ -3500,10 +3273,8 @@ path | `Path` | The base path for generating the unique directory. The last six
 
 **Example:**
 ```tomo
->> created := (/tmp/my-dir.XXXXXX).unique_directory()
-= (/tmp/my-dir-AwoxbM/)
->> created.is_directory()
-= yes
+assert created := (/tmp/my-dir.XXXXXX).unique_directory() == (/tmp/my-dir-AwoxbM/)
+assert created.is_directory() == yes
 created.remove()
 
 ```
@@ -3569,10 +3340,9 @@ text | `Text` | The text to write to the file.  | -
 
 **Example:**
 ```tomo
->> created := (./file-XXXXXX.txt).write_unique("Hello, world!")
-= (./file-27QHtq.txt)
->> created.read()
-= "Hello, world!"
+created := (./file-XXXXXX.txt).write_unique("Hello, world!")
+assert created == (./file-27QHtq.txt)
+assert created.read() == "Hello, world!"
 created.remove()
 
 ```
@@ -3594,10 +3364,9 @@ bytes | `[Byte]` | The bytes to write to the file.  | -
 
 **Example:**
 ```tomo
->> created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
-= (./file-27QHtq.txt)
->> created.read()
-= [1, 2, 3]
+created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
+assert created == (./file-27QHtq.txt)
+assert created.read() == [1, 2, 3]
 created.remove()
 
 ```
@@ -3620,7 +3389,9 @@ t | `&{K:V}` | The reference to the table.  | -
 
 **Example:**
 ```tomo
->> t.clear()
+t := &{"A":1}
+t.clear()
+assert t == {}
 
 ```
 ## Table.difference
@@ -3666,18 +3437,11 @@ key | `K` | The key whose associated value is to be retrieved.  | -
 
 **Example:**
 ```tomo
->> t := {"A": 1, "B": 2}
->> t.get("A")
-= 1?
-
->> t.get("????")
-= none
-
->> t.get("A")!
-= 1
-
->> t.get("????") or 0
-= 0
+t := {"A": 1, "B": 2}
+assert t.get("A") == 1
+assert t.get("????") == none
+assert t.get("A")! == 1
+assert t.get("????") or 0 == 0
 
 ```
 ## Table.get_or_set
@@ -3702,16 +3466,13 @@ default | `V` | The default value to insert and return if the key is not present
 
 **Example:**
 ```tomo
->> t := &{"A": @[1, 2, 3]; default=@[]}
->> t.get_or_set("A").insert(4)
->> t.get_or_set("B").insert(99)
->> t
-= &{"A": @[1, 2, 3, 4], "B": @[99]}
+t := &{"A": @[1, 2, 3]; default=@[]}
+t.get_or_set("A").insert(4)
+t.get_or_set("B").insert(99)
+assert t == &{"A": @[1, 2, 3, 4], "B": @[99]}
 
->> t.get_or_set("C", @[0, 0, 0])
-= @[0, 0, 0]
->> t
-= &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
+assert t.get_or_set("C", @[0, 0, 0]) == @[0, 0, 0]
+assert t == &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
 
 ```
 ## Table.has
@@ -3732,10 +3493,8 @@ key | `K` | The key to check for presence.  | -
 
 **Example:**
 ```tomo
->> {"A": 1, "B": 2}.has("A")
-= yes
->> {"A": 1, "B": 2}.has("xxx")
-= no
+assert {"A": 1, "B": 2}.has("A") == yes
+assert {"A": 1, "B": 2}.has("xxx") == no
 
 ```
 ## Table.intersection
@@ -3781,8 +3540,7 @@ key | `K` | The key of the key-value pair to remove.  | -
 ```tomo
 t := {"A": 1, "B": 2}
 t.remove("A")
->> t
-= {"B": 2}
+assert t == {"B": 2}
 
 ```
 ## Table.set
@@ -3806,8 +3564,7 @@ value | `V` | The value to associate with the key.  | -
 ```tomo
 t := {"A": 1, "B": 2}
 t.set("C", 3)
->> t
-= {"A": 1, "B": 2, "C": 3}
+assert t == {"A": 1, "B": 2, "C": 3}
 
 ```
 ## Table.with
@@ -3852,11 +3609,9 @@ fallback | `{K:V}?` | The new fallback table value.  | -
 ```tomo
 t := {"A": 1; fallback={"B": 2}}
 t2 = t.with_fallback({"B": 3"})
->> t2["B"]
-= 3?
+assert t2["B"] == 3
 t3 = t.with_fallback(none)
->> t2["B"]
-= none
+assert t2["B"] == none
 
 ```
 ## Table.without
@@ -3902,8 +3657,7 @@ text | `Text` | The text to be converted to a C-style string.  | -
 
 **Example:**
 ```tomo
->> "Hello".as_c_string()
-= CString("Hello")
+assert "Hello".as_c_string() == CString("Hello")
 
 ```
 ## Text.at
@@ -3926,8 +3680,7 @@ index | `Int` | The index of the graphical cluster (1-indexed).  | -
 
 **Example:**
 ```tomo
->> "Amélie".at(3)
-= "é"
+assert "Amélie".at(3) == "é"
 
 ```
 ## Text.by_line
@@ -4031,12 +3784,10 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "A".caseless_equals("a")
-= yes
+assert "A".caseless_equals("a") == yes
 
 # Turkish lowercase "I" is "ı" (dotless I), not "i"
->> "I".caseless_equals("i", language="tr_TR")
-= no
+assert "I".caseless_equals("i", language="tr_TR") == no
 
 ```
 ## Text.codepoint_names
@@ -4056,8 +3807,14 @@ text | `Text` | The text from which to extract codepoint names.  | -
 
 **Example:**
 ```tomo
->> "Amélie".codepoint_names()
-= ["LATIN CAPITAL LETTER A", "LATIN SMALL LETTER M", "LATIN SMALL LETTER E WITH ACUTE", "LATIN SMALL LETTER L", "LATIN SMALL LETTER I", "LATIN SMALL LETTER E"]
+assert "Amélie".codepoint_names() == [
+    "LATIN CAPITAL LETTER A",
+    "LATIN SMALL LETTER M",
+    "LATIN SMALL LETTER E WITH ACUTE",
+    "LATIN SMALL LETTER L",
+    "LATIN SMALL LETTER I",
+    "LATIN SMALL LETTER E",
+]
 
 ```
 ## Text.ends_with
@@ -4079,13 +3836,10 @@ remainder | `&Text?` | If non-none, this value will be set to the rest of the te
 
 **Example:**
 ```tomo
->> "hello world".ends_with("world")
-= yes
+assert "hello world".ends_with("world") == yes
 remainder : Text
->> "hello world".ends_with("world", &remainder)
-= yes
->> remainder
-= "hello "
+assert "hello world".ends_with("world", &remainder) == yes
+assert remainder == "hello "
 
 ```
 ## Text.from
@@ -4108,11 +3862,8 @@ first | `Int` | The index to begin the slice.  | -
 
 **Example:**
 ```tomo
->> "hello".from(2)
-= "ello"
-
->> "hello".from(-2)
-= "lo"
+assert "hello".from(2) == "ello"
+assert "hello".from(-2) == "lo"
 
 ```
 ## Text.from_c_string
@@ -4132,8 +3883,7 @@ str | `CString` | The C-style string to be converted.  | -
 
 **Example:**
 ```tomo
->> Text.from_c_string(CString("Hello"))
-= "Hello"
+assert Text.from_c_string(CString("Hello")) == "Hello"
 
 ```
 ## Text.from_codepoint_names
@@ -4155,12 +3905,12 @@ codepoint_names | `[Text]` | The names of each codepoint in the desired text (ca
 
 **Example:**
 ```tomo
->> Text.from_codepoint_names([
-"LATIN CAPITAL LETTER A WITH RING ABOVE",
-"LATIN SMALL LETTER K",
-"LATIN SMALL LETTER E",
+text := Text.from_codepoint_names([
+    "LATIN CAPITAL LETTER A WITH RING ABOVE",
+    "LATIN SMALL LETTER K",
+    "LATIN SMALL LETTER E",
 ]
-= "Åke"
+assert text == "Åke"
 
 ```
 ## Text.from_utf16
@@ -4182,10 +3932,8 @@ bytes | `[Int16]` | The UTF-16 integers of the desired text.  | -
 
 **Example:**
 ```tomo
->> Text.from_utf16([197, 107, 101])
-= "Åke"
->> Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028])
-= "こんにちは世界".utf16()
+assert Text.from_utf16([197, 107, 101]) == "Åke"
+assert Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028]) == "こんにちは世界".utf16()
 
 ```
 ## Text.from_utf32
@@ -4207,8 +3955,7 @@ codepoints | `[Int32]` | The UTF32 codepoints in the desired text.  | -
 
 **Example:**
 ```tomo
->> Text.from_utf32([197, 107, 101])
-= "Åke"
+assert Text.from_utf32([197, 107, 101]) == "Åke"
 
 ```
 ## Text.from_utf8
@@ -4230,8 +3977,7 @@ bytes | `[Byte]` | The UTF-8 bytes of the desired text.  | -
 
 **Example:**
 ```tomo
->> Text.from_utf8([195, 133, 107, 101])
-= "Åke"
+assert Text.from_utf8([195, 133, 107, 101]) == "Åke"
 
 ```
 ## Text.has
@@ -4252,10 +3998,8 @@ target | `Text` | The text to search for.  | -
 
 **Example:**
 ```tomo
->> "hello world".has("wo")
-= yes
->> "hello world".has("xxx")
-= no
+assert "hello world".has("wo") == yes
+assert "hello world".has("xxx") == no
 
 ```
 ## Text.join
@@ -4276,8 +4020,7 @@ pieces | `[Text]` | The list of text pieces to be joined.  | -
 
 **Example:**
 ```tomo
->> ", ".join(["one", "two", "three"])
-= "one, two, three"
+assert ", ".join(["one", "two", "three"]) == "one, two, three"
 
 ```
 ## Text.left_pad
@@ -4300,10 +4043,8 @@ language | `Text` | The ISO 639 language code for which character width to use.
 
 **Example:**
 ```tomo
->> "x".left_pad(5)
-= "    x"
->> "x".left_pad(5, "ABC")
-= "ABCAx"
+assert "x".left_pad(5) == "    x"
+assert "x".left_pad(5, "ABC") == "ABCAx"
 
 ```
 ## Text.lines
@@ -4323,16 +4064,11 @@ text | `Text` | The text to be split into lines.  | -
 
 **Example:**
 ```tomo
->> "one\ntwo\nthree".lines()
-= ["one", "two", "three"]
->> "one\ntwo\nthree\n".lines()
-= ["one", "two", "three"]
->> "one\ntwo\nthree\n\n".lines()
-= ["one", "two", "three", ""]
->> "one\r\ntwo\r\nthree\r\n".lines()
-= ["one", "two", "three"]
->> "".lines()
-= []
+assert "one\ntwo\nthree".lines() == ["one", "two", "three"]
+assert "one\ntwo\nthree\n".lines() == ["one", "two", "three"]
+assert "one\ntwo\nthree\n\n".lines() == ["one", "two", "three", ""]
+assert "one\r\ntwo\r\nthree\r\n".lines() == ["one", "two", "three"]
+assert "".lines() == []
 
 ```
 ## Text.lower
@@ -4353,11 +4089,8 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "AMÉLIE".lower()
-= "amélie"
-
->> "I".lower(language="tr_TR")
->> "ı"
+assert "AMÉLIE".lower() == "amélie"
+assert "I".lower(language="tr_TR") == "ı"
 
 ```
 ## Text.middle_pad
@@ -4380,10 +4113,8 @@ language | `Text` | The ISO 639 language code for which character width to use.
 
 **Example:**
 ```tomo
->> "x".middle_pad(6)
-= "  x   "
->> "x".middle_pad(10, "ABC")
-= "ABCAxABCAB"
+assert "x".middle_pad(6) == "  x   "
+assert "x".middle_pad(10, "ABC") == "ABCAxABCAB"
 
 ```
 ## Text.quoted
@@ -4405,8 +4136,7 @@ quotation_mark | `Text` | The quotation mark to use.  | ``"``
 
 **Example:**
 ```tomo
->> "one\ntwo".quoted()
-= "\"one\\ntwo\""
+assert "one\ntwo".quoted() == "\"one\\ntwo\""
 
 ```
 ## Text.repeat
@@ -4427,8 +4157,7 @@ count | `Int` | The number of times to repeat it. (Negative numbers are equivale
 
 **Example:**
 ```tomo
->> "Abc".repeat(3)
-= "AbcAbcAbc"
+assert "Abc".repeat(3) == "AbcAbcAbc"
 
 ```
 ## Text.replace
@@ -4450,8 +4179,7 @@ replacement | `Text` | The text to replace the target with.  | -
 
 **Example:**
 ```tomo
->> "Hello world".replace("world", "there")
-= "Hello there"
+assert "Hello world".replace("world", "there") == "Hello there"
 
 ```
 ## Text.reversed
@@ -4471,8 +4199,7 @@ text | `Text` | The text to reverse.  | -
 
 **Example:**
 ```tomo
->> "Abc".reversed()
-= "cbA"
+assert "Abc".reversed() == "cbA"
 
 ```
 ## Text.right_pad
@@ -4495,10 +4222,8 @@ language | `Text` | The ISO 639 language code for which character width to use.
 
 **Example:**
 ```tomo
->> "x".right_pad(5)
-= "x    "
->> "x".right_pad(5, "ABC")
-= "xABCA"
+assert "x".right_pad(5) == "x    "
+assert "x".right_pad(5, "ABC") == "xABCA"
 
 ```
 ## Text.slice
@@ -4522,14 +4247,9 @@ to | `Int` | The index of the last grapheme cluster to include (1-indexed).  | `
 
 **Example:**
 ```tomo
->> "hello".slice(2, 3)
-= "el"
-
->> "hello".slice(to=-2)
-= "hell"
-
->> "hello".slice(from=2)
-= "ello"
+assert "hello".slice(2, 3) == "el"
+assert "hello".slice(to=-2) == "hell"
+assert "hello".slice(from=2) == "ello"
 
 ```
 ## Text.split
@@ -4553,11 +4273,8 @@ delimiter | `Text` | The delimiter used to split the text.  | `""`
 
 **Example:**
 ```tomo
->> "one,two,,three".split(",")
-= ["one", "two", "", "three"]
-
->> "abc".split()
-= ["a", "b", "c"]
+assert "one,two,,three".split(",") == ["one", "two", "", "three"]
+assert "abc".split() == ["a", "b", "c"]
 
 ```
 ## Text.split_any
@@ -4581,8 +4298,7 @@ delimiters | `Text` | A text containing delimiters to use for splitting the text
 
 **Example:**
 ```tomo
->> "one, two,,three".split_any(", ")
-= ["one", "two", "three"]
+assert "one, two,,three".split_any(", ") == ["one", "two", "three"]
 
 ```
 ## Text.starts_with
@@ -4604,13 +4320,10 @@ remainder | `&Text?` | If non-none, this value will be set to the rest of the te
 
 **Example:**
 ```tomo
->> "hello world".starts_with("hello")
-= yes
+assert "hello world".starts_with("hello") == yes
 remainder : Text
->> "hello world".starts_with("hello", &remainder)
-= yes
->> remainder
-= " world"
+assert "hello world".starts_with("hello", &remainder) == yes
+assert remainder == " world"
 
 ```
 ## Text.title
@@ -4631,12 +4344,10 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "amélie".title()
-= "Amélie"
+assert "amélie".title() == "Amélie"
 
 # In Turkish, uppercase "i" is "İ"
->> "i".title(language="tr_TR")
-= "İ"
+assert "i".title(language="tr_TR") == "İ"
 
 ```
 ## Text.to
@@ -4659,11 +4370,8 @@ last | `Int` | The index of the last grapheme cluster to include (1-indexed).  |
 
 **Example:**
 ```tomo
->> "goodbye".to(3)
-= "goo"
-
->> "goodbye".to(-2)
-= "goodby"
+assert "goodbye".to(3) == "goo"
+assert "goodbye".to(-2) == "goodby"
 
 ```
 ## Text.translate
@@ -4684,14 +4392,14 @@ translations | `{Text:Text}` | A table mapping from target text to its replaceme
 
 **Example:**
 ```tomo
->> "A <tag> & an amperand".translate({
+text := "A <tag> & an amperand".translate({
     "&": "&amp;",
     "<": "&lt;",
     ">": "&gt;",
     '"": "&quot",
     "'": "&#39;",
 })
-= "A &lt;tag&gt; &amp; an ampersand"
+assert text == "A &lt;tag&gt; &amp; an ampersand"
 
 ```
 ## Text.trim
@@ -4714,14 +4422,9 @@ right | `Bool` | Whether or not to trim from the back of the text.  | `yes`
 
 **Example:**
 ```tomo
->> "   x y z    \n".trim()
-= "x y z"
-
->> "one,".trim(",")
-= "one"
-
->> "   xyz   ".trim(right=no)
-= "xyz   "
+assert "   x y z    \n".trim() == "x y z"
+assert "one,".trim(",") == "one"
+assert "   xyz   ".trim(right=no) == "xyz   "
 
 ```
 ## Text.upper
@@ -4742,12 +4445,10 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "amélie".upper()
-= "AMÉLIE"
+assert "amélie".upper() == "AMÉLIE"
 
 # In Turkish, uppercase "i" is "İ"
->> "i".upper(language="tr_TR")
-= "İ"
+assert "i".upper(language="tr_TR") == "İ"
 
 ```
 ## Text.utf16
@@ -4767,10 +4468,8 @@ text | `Text` | The text from which to extract Unicode code points.  | -
 
 **Example:**
 ```tomo
->> "Åke".utf16()
-= [197, 107, 101]
->> "こんにちは世界".utf16()
-= [12371, 12435, 12395, 12385, 12399, 19990, 30028]
+assert "Åke".utf16() == [197, 107, 101]
+assert "こんにちは世界".utf16() == [12371, 12435, 12395, 12385, 12399, 19990, 30028]
 
 ```
 ## Text.utf32
@@ -4790,8 +4489,7 @@ text | `Text` | The text from which to extract Unicode code points.  | -
 
 **Example:**
 ```tomo
->> "Amélie".utf32()
-= [65, 109, 233, 108, 105, 101]
+assert "Amélie".utf32() == [65, 109, 233, 108, 105, 101]
 
 ```
 ## Text.utf8
@@ -4811,8 +4509,7 @@ text | `Text` | The text to be converted to UTF8 bytes.  | -
 
 **Example:**
 ```tomo
->> "Amélie".utf8()
-= [65, 109, 195, 169, 108, 105, 101]
+assert "Amélie".utf8() == [65, 109, 195, 169, 108, 105, 101]
 
 ```
 ## Text.width
@@ -4834,10 +4531,8 @@ text | `Text` | The text whose length you want.  | -
 
 **Example:**
 ```tomo
->> "Amélie".width()
-= 6
->> "🤠".width()
-= 2
+assert "Amélie".width() == 6
+assert "🤠".width() == 2
 
 ```
 ## Text.without_prefix
@@ -4858,10 +4553,8 @@ prefix | `Text` | The prefix to remove.  | -
 
 **Example:**
 ```tomo
->> "foo:baz".without_prefix("foo:")
-= "baz"
->> "qux".without_prefix("foo:")
-= "qux"
+assert "foo:baz".without_prefix("foo:") == "baz"
+assert "qux".without_prefix("foo:") == "qux"
 
 ```
 ## Text.without_suffix
@@ -4882,9 +4575,7 @@ suffix | `Text` | The suffix to remove.  | -
 
 **Example:**
 ```tomo
->> "baz.foo".without_suffix(".foo")
-= "baz"
->> "qux".without_suffix(".foo")
-= "qux"
+assert "baz.foo".without_suffix(".foo") == "baz"
+assert "qux".without_suffix(".foo") == "qux"
 
 ```
diff --git a/api/booleans.md b/api/booleans.md
index ab08909d..5a7432fd 100644
--- a/api/booleans.md
+++ b/api/booleans.md
@@ -21,19 +21,13 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Bool.parse("yes")
-= yes : Bool?
->> Bool.parse("no")
-= no : Bool?
->> Bool.parse("???")
-= none : Bool?
-
->> Bool.parse("yesJUNK")
-= none : Bool?
+assert Bool.parse("yes") == yes
+assert Bool.parse("no") == no
+assert Bool.parse("???") == none
+
+assert Bool.parse("yesJUNK") == none
 remainder : Text
->> Bool.parse("yesJUNK", &remainder)
-= yes : Bool?
->> remainder
-= "JUNK"
+assert Bool.parse("yesJUNK", &remainder) == yes
+assert remainder == "JUNK"
 
 ```
diff --git a/api/booleans.yaml b/api/booleans.yaml
index 1d9d68fd..88d81196 100644
--- a/api/booleans.yaml
+++ b/api/booleans.yaml
@@ -20,17 +20,11 @@ Bool.parse:
         If non-none, this argument will be set to the remainder of the text after the matching part.
         If none, parsing will only succeed if the entire text matches.
   example: |
-    >> Bool.parse("yes")
-    = yes : Bool?
-    >> Bool.parse("no")
-    = no : Bool?
-    >> Bool.parse("???")
-    = none : Bool?
+    assert Bool.parse("yes") == yes
+    assert Bool.parse("no") == no
+    assert Bool.parse("???") == none
 
-    >> Bool.parse("yesJUNK")
-    = none : Bool?
+    assert Bool.parse("yesJUNK") == none
     remainder : Text
-    >> Bool.parse("yesJUNK", &remainder)
-    = yes : Bool?
-    >> remainder
-    = "JUNK"
+    assert Bool.parse("yesJUNK", &remainder) == yes
+    assert remainder == "JUNK"
diff --git a/api/builtins.md b/api/builtins.md
index 477b5464..0b06a41b 100644
--- a/api/builtins.md
+++ b/api/builtins.md
@@ -30,8 +30,7 @@ force_tty | `Bool` | Whether or not to force the use of /dev/tty.  | `yes`
 
 **Example:**
 ```tomo
->> ask("What's your name? ")
-= "Arthur Dent"
+assert ask("What's your name? ") == "Arthur Dent"
 
 ```
 ## exit
@@ -92,8 +91,8 @@ name | `Text` | The name of the environment variable to get.  | -
 
 **Example:**
 ```tomo
->> getenv("TERM")
-= "xterm-256color"?
+assert getenv("TERM") == "xterm-256color"
+assert getenv("not_a_variable") == none
 
 ```
 ## print
diff --git a/api/builtins.yaml b/api/builtins.yaml
index 83222660..2eae5340 100644
--- a/api/builtins.yaml
+++ b/api/builtins.yaml
@@ -31,8 +31,7 @@ ask:
       description: >
         Whether or not to force the use of /dev/tty.
   example: |
-    >> ask("What's your name? ")
-    = "Arthur Dent"
+    assert ask("What's your name? ") == "Arthur Dent"
 
 exit:
   short: exit the program
@@ -71,8 +70,8 @@ getenv:
       description: >
         The name of the environment variable to get.
   example: |
-    >> getenv("TERM")
-    = "xterm-256color"?
+    assert getenv("TERM") == "xterm-256color"
+    assert getenv("not_a_variable") == none
 
 print:
   short: print some text
diff --git a/api/bytes.md b/api/bytes.md
index fe8dddb1..bb54d92c 100644
--- a/api/bytes.md
+++ b/api/bytes.md
@@ -23,14 +23,10 @@ bit_index | `Int` | The index of the bit to check (1-indexed, range 1-8).  | -
 
 **Example:**
 ```tomo
->> Byte(6).get_bit(1)
-= no
->> Byte(6).get_bit(2)
-= yes
->> Byte(6).get_bit(3)
-= yes
->> Byte(6).get_bit(4)
-= no
+assert Byte(6).get_bit(1) == no
+assert Byte(6).get_bit(2) == yes
+assert Byte(6).get_bit(3) == yes
+assert Byte(6).get_bit(4) == no
 
 ```
 ## Byte.hex
@@ -52,8 +48,7 @@ prefix | `Bool` | Whether or not to prepend a `0x` prefix.  | `no`
 
 **Example:**
 ```tomo
->> Byte(18).hex()
-= "0x12"
+assert Byte(18).hex() == "0x12"
 
 ```
 ## Byte.is_between
@@ -75,12 +70,9 @@ high | `Byte` | The upper bound to check (inclusive).  | -
 
 **Example:**
 ```tomo
->> Byte(7).is_between(1, 10)
-= yes
->> Byte(7).is_between(100, 200)
-= no
->> Byte(7).is_between(1, 7)
-= yes
+assert Byte(7).is_between(1, 10) == yes
+assert Byte(7).is_between(100, 200) == no
+assert Byte(7).is_between(1, 7) == yes
 
 ```
 ## Byte.parse
@@ -101,18 +93,13 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Byte.parse("5")
-= Byte(5) : Byte?
->> Byte.parse("asdf")
-= none : Byte?
+assert Byte.parse("5") == Byte(5)
+assert Byte.parse("asdf") == none
+assert Byte.parse("123xyz") == none
 
->> Byte.parse("123xyz")
-= none : Byte?
 remainder : Text
->> Byte.parse("123xyz", &remainder)
-= Byte(123) : Byte?
->> remainder
-= "xyz"
+assert Byte.parse("123xyz", &remainder) == Byte(123)
+assert remainder == "xyz"
 
 ```
 ## Byte.to
@@ -134,14 +121,14 @@ step | `Byte?` | An optional step size to use. If unspecified or `none`, the ste
 
 **Example:**
 ```tomo
->> Byte(2).to(5)
-= func(->Byte?)
->> [x for x in Byte(2).to(5)]
-= [Byte(2), Byte(3), Byte(4), Byte(5)]
->> [x for x in Byte(5).to(2)]
-= [Byte(5), Byte(4), Byte(3), Byte(2)]
-
->> [x for x in Byte(2).to(5, step=2)]
-= [Byte(2), Byte(4)]
+iter := Byte(2).to(4)
+assert iter() == 2
+assert iter() == 3
+assert iter() == 4
+assert iter() == none
+
+assert [x for x in Byte(2).to(5)] == [Byte(2), Byte(3), Byte(4), Byte(5)]
+assert [x for x in Byte(5).to(2)] == [Byte(5), Byte(4), Byte(3), Byte(2)]
+assert [x for x in Byte(2).to(5, step=2)] == [Byte(2), Byte(4)]
 
 ```
diff --git a/api/bytes.yaml b/api/bytes.yaml
index f7b8cb5d..dea650e2 100644
--- a/api/bytes.yaml
+++ b/api/bytes.yaml
@@ -19,14 +19,10 @@ Byte.get_bit:
       description: >
         The index of the bit to check (1-indexed, range 1-8).
   example: |
-    >> Byte(6).get_bit(1)
-    = no
-    >> Byte(6).get_bit(2)
-    = yes
-    >> Byte(6).get_bit(3)
-    = yes
-    >> Byte(6).get_bit(4)
-    = no
+    assert Byte(6).get_bit(1) == no
+    assert Byte(6).get_bit(2) == yes
+    assert Byte(6).get_bit(3) == yes
+    assert Byte(6).get_bit(4) == no
 
 Byte.hex:
   short: convert to hexidecimal
@@ -52,8 +48,7 @@ Byte.hex:
       description: >
         Whether or not to prepend a `0x` prefix.
   example: |
-    >> Byte(18).hex()
-    = "0x12"
+    assert Byte(18).hex() == "0x12"
 
 Byte.is_between:
   short: test if inside a range
@@ -77,12 +72,9 @@ Byte.is_between:
       description: >
         The upper bound to check (inclusive).
   example: |
-    >> Byte(7).is_between(1, 10)
-    = yes
-    >> Byte(7).is_between(100, 200)
-    = no
-    >> Byte(7).is_between(1, 7)
-    = yes
+    assert Byte(7).is_between(1, 10) == yes
+    assert Byte(7).is_between(100, 200) == no
+    assert Byte(7).is_between(1, 7) == yes
 
 Byte.parse:
   short: convert text to a byte
@@ -104,18 +96,13 @@ Byte.parse:
         If non-none, this argument will be set to the remainder of the text after the matching part.
         If none, parsing will only succeed if the entire text matches.
   example: |
-    >> Byte.parse("5")
-    = Byte(5) : Byte?
-    >> Byte.parse("asdf")
-    = none : Byte?
+    assert Byte.parse("5") == Byte(5)
+    assert Byte.parse("asdf") == none
+    assert Byte.parse("123xyz") == none
 
-    >> Byte.parse("123xyz")
-    = none : Byte?
     remainder : Text
-    >> Byte.parse("123xyz", &remainder)
-    = Byte(123) : Byte?
-    >> remainder
-    = "xyz"
+    assert Byte.parse("123xyz", &remainder) == Byte(123)
+    assert remainder == "xyz"
 
 Byte.to:
   short: iterate over a range of bytes
@@ -140,13 +127,13 @@ Byte.to:
       description: >
         An optional step size to use. If unspecified or `none`, the step will be inferred to be `+1` if `last >= first`, otherwise `-1`.
   example: |
-    >> Byte(2).to(5)
-    = func(->Byte?)
-    >> [x for x in Byte(2).to(5)]
-    = [Byte(2), Byte(3), Byte(4), Byte(5)]
-    >> [x for x in Byte(5).to(2)]
-    = [Byte(5), Byte(4), Byte(3), Byte(2)]
+    iter := Byte(2).to(4)
+    assert iter() == 2
+    assert iter() == 3
+    assert iter() == 4
+    assert iter() == none
 
-    >> [x for x in Byte(2).to(5, step=2)]
-    = [Byte(2), Byte(4)]
+    assert [x for x in Byte(2).to(5)] == [Byte(2), Byte(3), Byte(4), Byte(5)]
+    assert [x for x in Byte(5).to(2)] == [Byte(5), Byte(4), Byte(3), Byte(2)]
+    assert [x for x in Byte(2).to(5, step=2)] == [Byte(2), Byte(4)]
 
diff --git a/api/integers.md b/api/integers.md
index 6468589e..6af66b0d 100644
--- a/api/integers.md
+++ b/api/integers.md
@@ -20,8 +20,7 @@ x | `Int` | The integer whose absolute value is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (-10).abs()
-= 10
+assert (-10).abs() == 10
 
 ```
 ## Int.choose
@@ -42,8 +41,7 @@ k | `Int` | The number of things to be chosen.  | -
 
 **Example:**
 ```tomo
->> (4).choose(2)
-= 6
+assert (4).choose(2) == 6
 
 ```
 ## Int.clamped
@@ -65,8 +63,7 @@ high | `Int` | The highest value the result can take.  | -
 
 **Example:**
 ```tomo
->> (2).clamped(5, 10)
-= 5
+assert (2).clamped(5, 10) == 5
 
 ```
 ## Int.factorial
@@ -86,8 +83,7 @@ n | `Int` | The integer to compute the factorial of.  | -
 
 **Example:**
 ```tomo
->> (10).factorial()
-= 3628800
+assert (10).factorial() == 3628800
 
 ```
 ## Int.get_bit
@@ -110,14 +106,10 @@ bit_index | `Int` | The index of the bit to check (1-indexed).  | -
 
 **Example:**
 ```tomo
->> (6).get_bit(1)
-= no
->> (6).get_bit(2)
-= yes
->> (6).get_bit(3)
-= yes
->> (6).get_bit(4)
-= no
+assert (6).get_bit(1) == no
+assert (6).get_bit(2) == yes
+assert (6).get_bit(3) == yes
+assert (6).get_bit(4) == no
 
 ```
 ## Int.hex
@@ -140,8 +132,7 @@ prefix | `Bool` | Whether to include a "0x" prefix.  | `yes`
 
 **Example:**
 ```tomo
->> (255).hex(digits=4, uppercase=yes, prefix=yes)
-= "0x00FF"
+assert (255).hex(digits=4, uppercase=yes, prefix=yes) == "0x00FF"
 
 ```
 ## Int.is_between
@@ -163,12 +154,9 @@ high | `Int` | The upper bound to check (inclusive).  | -
 
 **Example:**
 ```tomo
->> (7).is_between(1, 10)
-= yes
->> (7).is_between(100, 200)
-= no
->> (7).is_between(1, 7)
-= yes
+assert (7).is_between(1, 10) == yes
+assert (7).is_between(100, 200) == no
+assert (7).is_between(1, 7) == yes
 
 ```
 ## Int.is_prime
@@ -191,10 +179,8 @@ reps | `Int` | The number of repetitions for primality tests.  | `50`
 
 **Example:**
 ```tomo
->> (7).is_prime()
-= yes
->> (6).is_prime()
-= no
+assert (7).is_prime() == yes
+assert (6).is_prime() == no
 
 ```
 ## Int.next_prime
@@ -216,8 +202,7 @@ x | `Int` | The integer after which to find the next prime.  | -
 
 **Example:**
 ```tomo
->> (11).next_prime()
-= 13
+assert (11).next_prime() == 13
 
 ```
 ## Int.octal
@@ -239,8 +224,7 @@ prefix | `Bool` | Whether to include a "0o" prefix.  | `yes`
 
 **Example:**
 ```tomo
->> (64).octal(digits=4, prefix=yes)
-= "0o0100"
+assert (64).octal(digits=4, prefix=yes) == "0o0100"
 
 ```
 ## Int.onward
@@ -265,8 +249,7 @@ nums : &[Int] = &[]
 for i in (5).onward()
 nums.insert(i)
 stop if i == 10
->> nums[]
-= [5, 6, 7, 8, 9, 10]
+assert nums[] == [5, 6, 7, 8, 9, 10]
 
 ```
 ## Int.parse
@@ -287,26 +270,18 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Int.parse("123")
-= 123 : Int?
->> Int.parse("0xFF")
-= 255 : Int?
-
->> Int.parse("123xyz")
-= none
+assert Int.parse("123") == 123
+assert Int.parse("0xFF") == 255
+assert Int.parse("123xyz") == none
 remainder : Text
->> Int.parse("123xyz", &remainder)
-= 123 : Int?
->> remainder
-= "xyz"
+assert Int.parse("123xyz", &remainder) == 123
+assert remainder == "xyz"
 
 # Can't parse:
->> Int.parse("asdf")
-= none : Int?
+assert Int.parse("asdf") == none
 
 # Outside valid range:
->> Int8.parse("9999999")
-= none : Int8?
+assert Int8.parse("9999999") == none
 
 ```
 ## Int.prev_prime
@@ -328,8 +303,7 @@ x | `Int` | The integer before which to find the previous prime.  | -
 
 **Example:**
 ```tomo
->> (11).prev_prime()
-= 7
+assert (11).prev_prime() == 7
 
 ```
 ## Int.sqrt
@@ -349,10 +323,8 @@ x | `Int` | The integer whose square root is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (16).sqrt()
-= 4
->> (17).sqrt()
-= 4
+assert (16).sqrt() == 4
+assert (17).sqrt() == 4
 
 ```
 ## Int.to
@@ -374,14 +346,15 @@ step | `Int?` | An optional step size to use. If unspecified or `none`, the step
 
 **Example:**
 ```tomo
->> (2).to(5)
-= func(->Int?)
->> [x for x in (2).to(5)]
-= [2, 3, 4, 5]
->> [x for x in (5).to(2)]
-= [5, 4, 3, 2]
-
->> [x for x in (2).to(5, step=2)]
-= [2, 4]
+iter := (2).to(5)
+assert iter() == 2
+assert iter() == 3
+assert iter() == 4
+assert iter() == 5
+assert iter() == none
+
+assert [x for x in (2).to(5)] == [2, 3, 4, 5]
+assert [x for x in (5).to(2)] == [5, 4, 3, 2]
+assert [x for x in (2).to(5, step=2)] == [2, 4]
 
 ```
diff --git a/api/integers.yaml b/api/integers.yaml
index 4d7e423f..70709b04 100644
--- a/api/integers.yaml
+++ b/api/integers.yaml
@@ -12,8 +12,7 @@ Int.abs:
       description: >
         The integer whose absolute value is to be calculated.
   example: |
-    >> (-10).abs()
-    = 10
+    assert (-10).abs() == 10
 
 Int.choose:
   short: binomial coefficient
@@ -36,8 +35,7 @@ Int.choose:
       description: >
         The number of things to be chosen.
   example: |
-    >> (4).choose(2)
-    = 6
+    assert (4).choose(2) == 6
 
 Int.clamped:
   short: clamp an integer
@@ -62,8 +60,7 @@ Int.clamped:
       description: >
         The highest value the result can take.
   example: |
-    >> (2).clamped(5, 10)
-    = 5
+    assert (2).clamped(5, 10) == 5
 
 Int.factorial:
   short: factorial
@@ -79,8 +76,7 @@ Int.factorial:
       description: >
         The integer to compute the factorial of.
   example: |
-    >> (10).factorial()
-    = 3628800
+    assert (10).factorial() == 3628800
 
 Int.get_bit:
   short: check whether a bit is set
@@ -107,14 +103,10 @@ Int.get_bit:
       description: >
         The index of the bit to check (1-indexed).
   example: |
-    >> (6).get_bit(1)
-    = no
-    >> (6).get_bit(2)
-    = yes
-    >> (6).get_bit(3)
-    = yes
-    >> (6).get_bit(4)
-    = no
+    assert (6).get_bit(1) == no
+    assert (6).get_bit(2) == yes
+    assert (6).get_bit(3) == yes
+    assert (6).get_bit(4) == no
 
 Int.hex:
   short: convert to hexidecimal
@@ -145,8 +137,7 @@ Int.hex:
       description: >
         Whether to include a "0x" prefix.
   example: |
-    >> (255).hex(digits=4, uppercase=yes, prefix=yes)
-    = "0x00FF"
+    assert (255).hex(digits=4, uppercase=yes, prefix=yes) == "0x00FF"
 
 Int.is_between:
   short: test if an int is in a range
@@ -170,12 +161,9 @@ Int.is_between:
       description: >
         The upper bound to check (inclusive).
   example: |
-    >> (7).is_between(1, 10)
-    = yes
-    >> (7).is_between(100, 200)
-    = no
-    >> (7).is_between(1, 7)
-    = yes
+    assert (7).is_between(1, 10) == yes
+    assert (7).is_between(100, 200) == no
+    assert (7).is_between(1, 7) == yes
 
 Int.is_prime:
   short: check if an integer is prime
@@ -201,10 +189,8 @@ Int.is_prime:
       description: >
         The number of repetitions for primality tests.
   example: |
-    >> (7).is_prime()
-    = yes
-    >> (6).is_prime()
-    = no
+    assert (7).is_prime() == yes
+    assert (6).is_prime() == no
 
 Int.next_prime:
   short: get the next prime
@@ -225,8 +211,7 @@ Int.next_prime:
       description: >
         The integer after which to find the next prime.
   example: |
-    >> (11).next_prime()
-    = 13
+    assert (11).next_prime() == 13
 
 Int.octal:
   short: convert to octal
@@ -252,8 +237,7 @@ Int.octal:
       description: >
         Whether to include a "0o" prefix.
   example: |
-    >> (64).octal(digits=4, prefix=yes)
-    = "0o0100"
+    assert (64).octal(digits=4, prefix=yes) == "0o0100"
 
 Int.onward:
   short: iterate from a number onward
@@ -279,8 +263,7 @@ Int.onward:
     for i in (5).onward()
     nums.insert(i)
     stop if i == 10
-    >> nums[]
-    = [5, 6, 7, 8, 9, 10]
+    assert nums[] == [5, 6, 7, 8, 9, 10]
 
 Int.parse:
   short: convert text to integer
@@ -304,26 +287,18 @@ Int.parse:
         If non-none, this argument will be set to the remainder of the text after the matching part.
         If none, parsing will only succeed if the entire text matches.
   example: |
-    >> Int.parse("123")
-    = 123 : Int?
-    >> Int.parse("0xFF")
-    = 255 : Int?
-
-    >> Int.parse("123xyz")
-    = none
+    assert Int.parse("123") == 123
+    assert Int.parse("0xFF") == 255
+    assert Int.parse("123xyz") == none
     remainder : Text
-    >> Int.parse("123xyz", &remainder)
-    = 123 : Int?
-    >> remainder
-    = "xyz"
+    assert Int.parse("123xyz", &remainder) == 123
+    assert remainder == "xyz"
 
     # Can't parse:
-    >> Int.parse("asdf")
-    = none : Int?
+    assert Int.parse("asdf") == none
 
     # Outside valid range:
-    >> Int8.parse("9999999")
-    = none : Int8?
+    assert Int8.parse("9999999") == none
 
 Int.prev_prime:
   short: get the previous prime
@@ -346,8 +321,7 @@ Int.prev_prime:
       description: >
         The integer before which to find the previous prime.
   example: |
-    >> (11).prev_prime()
-    = 7
+    assert (11).prev_prime() == 7
 
 Int.sqrt:
   short: square root
@@ -363,10 +337,8 @@ Int.sqrt:
       description: >
         The integer whose square root is to be calculated.
   example: |
-    >> (16).sqrt()
-    = 4
-    >> (17).sqrt()
-    = 4
+    assert (16).sqrt() == 4
+    assert (17).sqrt() == 4
 
 Int.to:
   short: iterate a range of integers
@@ -391,13 +363,14 @@ Int.to:
       description: >
         An optional step size to use. If unspecified or `none`, the step will be inferred to be `+1` if `last >= first`, otherwise `-1`.
   example: |
-    >> (2).to(5)
-    = func(->Int?)
-    >> [x for x in (2).to(5)]
-    = [2, 3, 4, 5]
-    >> [x for x in (5).to(2)]
-    = [5, 4, 3, 2]
+    iter := (2).to(5)
+    assert iter() == 2
+    assert iter() == 3
+    assert iter() == 4
+    assert iter() == 5
+    assert iter() == none
 
-    >> [x for x in (2).to(5, step=2)]
-    = [2, 4]
+    assert [x for x in (2).to(5)] == [2, 3, 4, 5]
+    assert [x for x in (5).to(2)] == [5, 4, 3, 2]
+    assert [x for x in (2).to(5, step=2)] == [2, 4]
 
diff --git a/api/lists.md b/api/lists.md
index 9c1ce5ee..3ad61805 100644
--- a/api/lists.md
+++ b/api/lists.md
@@ -21,14 +21,9 @@ by | `func(x,y:&T->Int32)` | The comparison function used to determine order. If
 
 **Example:**
 ```tomo
->> [1, 3, 5, 7, 9].binary_search(5)
-= 3
-
->> [1, 3, 5, 7, 9].binary_search(-999)
-= 1
-
->> [1, 3, 5, 7, 9].binary_search(999)
-= 6
+assert [1, 3, 5, 7, 9].binary_search(5) == 3
+assert [1, 3, 5, 7, 9].binary_search(-999) == 1
+assert [1, 3, 5, 7, 9].binary_search(999) == 6
 
 ```
 ## List.by
@@ -49,8 +44,7 @@ step | `Int` | The step value for selecting elements.  | -
 
 **Example:**
 ```tomo
->> [1, 2, 3, 4, 5, 6].by(2)
-= [1, 3, 5]
+assert [1, 2, 3, 4, 5, 6].by(2) == [1, 3, 5]
 
 ```
 ## List.clear
@@ -70,7 +64,7 @@ list | `@[T]` | The mutable reference to the list to be cleared.  | -
 
 **Example:**
 ```tomo
->> my_list.clear()
+my_list.clear()
 
 ```
 ## List.counts
@@ -90,8 +84,7 @@ list | `[T]` | The list to count elements in.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 30, 30].counts()
-= {10=1, 20=1, 30=3}
+assert [10, 20, 30, 30, 30].counts() == {10=1, 20=1, 30=3}
 
 ```
 ## List.find
@@ -112,11 +105,8 @@ target | `T` | The item to search for.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].find(20)
-= 2 : Int?
-
->> [10, 20, 30, 40, 50].find(9999)
-= none : Int?
+assert [10, 20, 30, 40, 50].find(20) == 2
+assert [10, 20, 30, 40, 50].find(9999) == none
 
 ```
 ## List.from
@@ -137,8 +127,7 @@ first | `Int` | The index to start from.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].from(3)
-= [30, 40, 50]
+assert [10, 20, 30, 40, 50].from(3) == [30, 40, 50]
 
 ```
 ## List.has
@@ -159,8 +148,7 @@ target | `T` | The element to check for.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30].has(20)
-= yes
+assert [10, 20, 30].has(20) == yes
 
 ```
 ## List.heap_pop
@@ -181,10 +169,9 @@ by | `func(x,y:&T->Int32)` | The comparison function used to determine order. If
 
 **Example:**
 ```tomo
->> my_heap := [30, 10, 20]
->> my_heap.heapify()
->> my_heap.heap_pop()
-= 10
+my_heap := [30, 10, 20]
+my_heap.heapify()
+assert my_heap.heap_pop() == 10
 
 ```
 ## List.heap_push
@@ -206,7 +193,7 @@ by | `` | The comparison function used to determine order. If not specified, the
 
 **Example:**
 ```tomo
->> my_heap.heap_push(10)
+my_heap.heap_push(10)
 
 ```
 ## List.heapify
@@ -227,8 +214,8 @@ by | `func(x,y:&T->Int32)` | The comparison function used to determine order. If
 
 **Example:**
 ```tomo
->> my_heap := [30, 10, 20]
->> my_heap.heapify()
+my_heap := [30, 10, 20]
+my_heap.heapify()
 
 ```
 ## List.insert
@@ -252,14 +239,12 @@ at | `Int` | The index at which to insert the item.  | `0`
 
 **Example:**
 ```tomo
->> list := [10, 20]
->> list.insert(30)
->> list
-= [10, 20, 30]
+list := [10, 20]
+list.insert(30)
+assert list == [10, 20, 30]
 
->> list.insert(999, at=2)
->> list
-= [10, 999, 20, 30]
+list.insert(999, at=2)
+assert list == [10, 999, 20, 30]
 
 ```
 ## List.insert_all
@@ -285,12 +270,10 @@ at | `Int` | The index at which to insert the item.  | `0`
 ```tomo
 list := [10, 20]
 list.insert_all([30, 40])
->> list
-= [10, 20, 30, 40]
+assert list == [10, 20, 30, 40]
 
 list.insert_all([99, 100], at=2)
->> list
-= [10, 99, 100, 20, 30, 40]
+assert list == [10, 99, 100, 20, 30, 40]
 
 ```
 ## List.pop
@@ -313,17 +296,13 @@ index | `Int` | The index from which to remove the item.  | `-1`
 
 **Example:**
 ```tomo
->> list := [10, 20, 30, 40]
+list := &[10, 20, 30, 40]
 
->> list.pop()
-= 40
->> list
-= &[10, 20, 30]
+assert list.pop() == 40
+assert list[] == [10, 20, 30]
 
->> list.pop(index=2)
-= 20
->> list
-= &[10, 30]
+assert list.pop(index=2) == 20
+assert list[] == [10, 30]
 
 ```
 ## List.random
@@ -344,8 +323,7 @@ random | `func(min,max:Int64->Int64)?` | If provided, this function will be used
 
 **Example:**
 ```tomo
->> [10, 20, 30].random()
-= 20
+assert [10, 20, 30].random() == 20
 
 ```
 ## List.remove_at
@@ -371,12 +349,10 @@ count | `Int` | The number of elements to remove.  | `1`
 ```tomo
 list := [10, 20, 30, 40, 50]
 list.remove_at(2)
->> list
-= [10, 30, 40, 50]
+assert list == [10, 30, 40, 50]
 
 list.remove_at(2, count=2)
->> list
-= [10, 50]
+assert list == [10, 50]
 
 ```
 ## List.remove_item
@@ -402,12 +378,10 @@ max_count | `Int` | The maximum number of occurrences to remove.  | `-1`
 ```tomo
 list := [10, 20, 10, 20, 30]
 list.remove_item(10)
->> list
-= [20, 20, 30]
+assert list == [20, 20, 30]
 
 list.remove_item(20, max_count=1)
->> list
-= [20, 30]
+assert list == [20, 30]
 
 ```
 ## List.reversed
@@ -427,8 +401,7 @@ list | `[T]` | The list to be reversed.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30].reversed()
-= [30, 20, 10]
+assert [10, 20, 30].reversed() == [30, 20, 10]
 
 ```
 ## List.sample
@@ -453,8 +426,7 @@ random | `func(->Num)?` | If provided, this function will be used to get random
 
 **Example:**
 ```tomo
->> [10, 20, 30].sample(2, weights=[90%, 5%, 5%])
-= [10, 10]
+assert [10, 20, 30].sample(2, weights=[90%, 5%, 5%]) == [10, 10]
 
 ```
 ## List.shuffle
@@ -475,7 +447,7 @@ random | `func(min,max:Int64->Int64)?` | If provided, this function will be used
 
 **Example:**
 ```tomo
->> list.shuffle()
+list.shuffle()
 
 ```
 ## List.shuffled
@@ -496,8 +468,7 @@ random | `func(min,max:Int64->Int64)?` | If provided, this function will be used
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40].shuffled()
-= [40, 10, 30, 20]
+assert [10, 20, 30, 40].shuffled() == [40, 10, 30, 20]
 
 ```
 ## List.slice
@@ -519,11 +490,8 @@ to | `Int` | The last index to include.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].slice(2, 4)
-= [20, 30, 40]
-
->> [10, 20, 30, 40, 50].slice(-3, -2)
-= [30, 40]
+assert [10, 20, 30, 40, 50].slice(2, 4) == [20, 30, 40]
+assert [10, 20, 30, 40, 50].slice(-3, -2) == [30, 40]
 
 ```
 ## List.sort
@@ -546,12 +514,10 @@ by | `` | The comparison function used to determine order. If not specified, the
 ```tomo
 list := [40, 10, -30, 20]
 list.sort()
->> list
-= [-30, 10, 20, 40]
+assert list == [-30, 10, 20, 40]
 
 list.sort(func(a,b:&Int): a.abs() <> b.abs())
->> list
-= [10, 20, -30, 40]
+assert list == [10, 20, -30, 40]
 
 ```
 ## List.sorted
@@ -572,11 +538,10 @@ by | `` | The comparison function used to determine order. If not specified, the
 
 **Example:**
 ```tomo
->> [40, 10, -30, 20].sorted()
-= [-30, 10, 20, 40]
-
->> [40, 10, -30, 20].sorted(func(a,b:&Int): a.abs() <> b.abs())
-= [10, 20, -30, 40]
+assert [40, 10, -30, 20].sorted() == [-30, 10, 20, 40]
+assert [40, 10, -30, 20].sorted(
+   func(a,b:&Int): a.abs() <> b.abs()
+) == [10, 20, -30, 40]
 
 ```
 ## List.to
@@ -597,32 +562,28 @@ last | `Int` | The index up to which elements should be included.  | -
 
 **Example:**
 ```tomo
->> [10, 20, 30, 40, 50].to(3)
-= [10, 20, 30]
-
->> [10, 20, 30, 40, 50].to(-2)
-= [10, 20, 30, 40]
+assert [10, 20, 30, 40, 50].to(3) == [10, 20, 30]
+assert [10, 20, 30, 40, 50].to(-2) == [10, 20, 30, 40]
 
 ```
 ## List.unique
 
 ```tomo
-List.unique : func(list: [T] -> |T|)
+List.unique : func(list: [T] -> [T])
 ```
 
-Returns a Set that contains the unique elements of the list.
+Returns a list of the unique elements of the list.
 
 Argument | Type | Description | Default
 ---------|------|-------------|---------
 list | `[T]` | The list to process.  | -
 
-**Return:** A set containing only unique elements from the list.
+**Return:** A list of the unique elements from the list.
 
 
 **Example:**
 ```tomo
->> [10, 20, 10, 10, 30].unique()
-= {10, 20, 30}
+assert [10, 20, 10, 10, 30].unique() == [10, 20, 30]
 
 ```
 ## List.where
@@ -643,9 +604,7 @@ predicate | `func(item:&T -> Bool)` | A function that returns `yes` if the item'
 
 **Example:**
 ```tomo
->> [4, 5, 6].where(func(i:&Int): i.is_prime())
-= 5 : Int?
->> [4, 6, 8].find(func(i:&Int): i.is_prime())
-= none : Int?
+assert [4, 5, 6].where(func(i:&Int): i.is_prime()) == 5
+assert [4, 6, 8].find(func(i:&Int): i.is_prime()) == none
 
 ```
diff --git a/api/lists.yaml b/api/lists.yaml
index 6648fe94..89769064 100644
--- a/api/lists.yaml
+++ b/api/lists.yaml
@@ -21,14 +21,9 @@ List.binary_search:
         The comparison function used to determine order. If not specified, the
         default comparison function for the item type will be used.
   example: |
-    >> [1, 3, 5, 7, 9].binary_search(5)
-    = 3
-
-    >> [1, 3, 5, 7, 9].binary_search(-999)
-    = 1
-
-    >> [1, 3, 5, 7, 9].binary_search(999)
-    = 6
+    assert [1, 3, 5, 7, 9].binary_search(5) == 3
+    assert [1, 3, 5, 7, 9].binary_search(-999) == 1
+    assert [1, 3, 5, 7, 9].binary_search(999) == 6
 
 List.by:
   short: slice by a step value
@@ -48,8 +43,7 @@ List.by:
       description: >
         The step value for selecting elements.
   example: |
-    >> [1, 2, 3, 4, 5, 6].by(2)
-    = [1, 3, 5]
+    assert [1, 2, 3, 4, 5, 6].by(2) == [1, 3, 5]
 
 List.clear:
   short: clear a list
@@ -65,7 +59,7 @@ List.clear:
       description: >
         The mutable reference to the list to be cleared.
   example: |
-    >> my_list.clear()
+    my_list.clear()
 
 List.counts:
   short: count occurrences
@@ -81,8 +75,7 @@ List.counts:
       description: >
         The list to count elements in.
   example: |
-    >> [10, 20, 30, 30, 30].counts()
-    = {10=1, 20=1, 30=3}
+    assert [10, 20, 30, 30, 30].counts() == {10=1, 20=1, 30=3}
 
 List.find:
   short: find an element's index
@@ -102,11 +95,8 @@ List.find:
       description: >
         The item to search for.
   example: |
-    >> [10, 20, 30, 40, 50].find(20)
-    = 2 : Int?
-
-    >> [10, 20, 30, 40, 50].find(9999)
-    = none : Int?
+    assert [10, 20, 30, 40, 50].find(20) == 2
+    assert [10, 20, 30, 40, 50].find(9999) == none
 
 List.from:
   short: slice an array from a start index
@@ -126,8 +116,7 @@ List.from:
       description: >
         The index to start from.
   example: |
-    >> [10, 20, 30, 40, 50].from(3)
-    = [30, 40, 50]
+    assert [10, 20, 30, 40, 50].from(3) == [30, 40, 50]
 
 List.has:
   short: check for member
@@ -147,8 +136,7 @@ List.has:
       description: >
         The element to check for.
   example: |
-    >> [10, 20, 30].has(20)
-    = yes
+    assert [10, 20, 30].has(20) == yes
 
 List.heap_pop:
   short: heap pop
@@ -171,10 +159,9 @@ List.heap_pop:
         The comparison function used to determine order. If not specified, the
         default comparison function for the item type will be used.
   example: |
-    >> my_heap := [30, 10, 20]
-    >> my_heap.heapify()
-    >> my_heap.heap_pop()
-    = 10
+    my_heap := [30, 10, 20]
+    my_heap.heapify()
+    assert my_heap.heap_pop() == 10
 
 List.heap_push:
   short: heap push
@@ -200,7 +187,7 @@ List.heap_push:
         The comparison function used to determine order. If not specified, the
         default comparison function for the item type will be used.
   example: |
-    >> my_heap.heap_push(10)
+    my_heap.heap_push(10)
 
 List.heapify:
   short: convert a list into a heap
@@ -222,8 +209,8 @@ List.heapify:
         The comparison function used to determine order. If not specified, the
         default comparison function for the item type will be used.
   example: |
-    >> my_heap := [30, 10, 20]
-    >> my_heap.heapify()
+    my_heap := [30, 10, 20]
+    my_heap.heapify()
 
 List.insert:
   short: add an item to a list
@@ -251,14 +238,12 @@ List.insert:
     Since indices are 1-indexed and negative indices mean "starting from the
     back", an index of `0` means "after the last item".
   example: |
-    >> list := [10, 20]
-    >> list.insert(30)
-    >> list
-    = [10, 20, 30]
+    list := [10, 20]
+    list.insert(30)
+    assert list == [10, 20, 30]
 
-    >> list.insert(999, at=2)
-    >> list
-    = [10, 999, 20, 30]
+    list.insert(999, at=2)
+    assert list == [10, 999, 20, 30]
 
 List.insert_all:
   short: add multiple items to a list
@@ -288,12 +273,10 @@ List.insert_all:
   example: |
     list := [10, 20]
     list.insert_all([30, 40])
-    >> list
-    = [10, 20, 30, 40]
+    assert list == [10, 20, 30, 40]
 
     list.insert_all([99, 100], at=2)
-    >> list
-    = [10, 99, 100, 20, 30, 40]
+    assert list == [10, 99, 100, 20, 30, 40]
 
 List.pop:
   short: pop an item from a list
@@ -320,17 +303,13 @@ List.pop:
     Since negative indices are counted from the back, the default behavior is
     to pop the last value.
   example: |
-    >> list := [10, 20, 30, 40]
+    list := &[10, 20, 30, 40]
 
-    >> list.pop()
-    = 40
-    >> list
-    = &[10, 20, 30]
+    assert list.pop() == 40
+    assert list[] == [10, 20, 30]
 
-    >> list.pop(index=2)
-    = 20
-    >> list
-    = &[10, 30]
+    assert list.pop(index=2) == 20
+    assert list[] == [10, 30]
 
 List.random:
   short: pick a random element
@@ -353,8 +332,7 @@ List.random:
         values must be between `min` and `max` (inclusive). (Used for deterministic pseudorandom number
         generation)
   example: |
-    >> [10, 20, 30].random()
-    = 20
+    assert [10, 20, 30].random() == 20
 
 List.remove_at:
   short: remove an item by index
@@ -385,12 +363,10 @@ List.remove_at:
   example: |
     list := [10, 20, 30, 40, 50]
     list.remove_at(2)
-    >> list
-    = [10, 30, 40, 50]
+    assert list == [10, 30, 40, 50]
 
     list.remove_at(2, count=2)
-    >> list
-    = [10, 50]
+    assert list == [10, 50]
 
 List.remove_item:
   short: remove an item by value
@@ -419,12 +395,10 @@ List.remove_item:
   example: |
     list := [10, 20, 10, 20, 30]
     list.remove_item(10)
-    >> list
-    = [20, 20, 30]
+    assert list == [20, 20, 30]
 
     list.remove_item(20, max_count=1)
-    >> list
-    = [20, 30]
+    assert list == [20, 30]
 
 List.reversed:
   short: get a reversed list
@@ -440,8 +414,7 @@ List.reversed:
       description: >
         The list to be reversed.
   example: |
-    >> [10, 20, 30].reversed()
-    = [30, 20, 10]
+    assert [10, 20, 30].reversed() == [30, 20, 10]
 
 List.sample:
   short: weighted random choices
@@ -485,8 +458,7 @@ List.sample:
         between `0.0` (inclusive) and `1.0` (exclusive). (Used for deterministic
         pseudorandom number generation)
   example: |
-    >> [10, 20, 30].sample(2, weights=[90%, 5%, 5%])
-    = [10, 10]
+    assert [10, 20, 30].sample(2, weights=[90%, 5%, 5%]) == [10, 10]
 
 List.shuffle:
   short: shuffle a list in place
@@ -509,7 +481,7 @@ List.shuffle:
         values must be between `min` and `max` (inclusive). (Used for deterministic pseudorandom number
         generation)
   example: |
-    >> list.shuffle()
+    list.shuffle()
 
 List.shuffled:
   short: return a shuffled list
@@ -532,8 +504,7 @@ List.shuffled:
         values must be between `min` and `max` (inclusive). (Used for deterministic pseudorandom number
         generation)
   example: |
-    >> [10, 20, 30, 40].shuffled()
-    = [40, 10, 30, 20]
+    assert [10, 20, 30, 40].shuffled() == [40, 10, 30, 20]
 
 List.slice:
   short: get a slice of a list
@@ -559,11 +530,8 @@ List.slice:
       description: >
         The last index to include.
   example: |
-    >> [10, 20, 30, 40, 50].slice(2, 4)
-    = [20, 30, 40]
-
-    >> [10, 20, 30, 40, 50].slice(-3, -2)
-    = [30, 40]
+    assert [10, 20, 30, 40, 50].slice(2, 4) == [20, 30, 40]
+    assert [10, 20, 30, 40, 50].slice(-3, -2) == [30, 40]
 
 List.sort:
   short: sort a list
@@ -586,12 +554,10 @@ List.sort:
   example: |
     list := [40, 10, -30, 20]
     list.sort()
-    >> list
-    = [-30, 10, 20, 40]
+    assert list == [-30, 10, 20, 40]
 
     list.sort(func(a,b:&Int): a.abs() <> b.abs())
-    >> list
-    = [10, 20, -30, 40]
+    assert list == [10, 20, -30, 40]
 
 List.sorted:
   short: sorted copy of a list
@@ -612,11 +578,10 @@ List.sorted:
         The comparison function used to determine order. If not specified, the
         default comparison function for the item type will be used.
   example: |
-    >> [40, 10, -30, 20].sorted()
-    = [-30, 10, 20, 40]
-
-    >> [40, 10, -30, 20].sorted(func(a,b:&Int): a.abs() <> b.abs())
-    = [10, 20, -30, 40]
+    assert [40, 10, -30, 20].sorted() == [-30, 10, 20, 40]
+    assert [40, 10, -30, 20].sorted(
+       func(a,b:&Int): a.abs() <> b.abs()
+    ) == [10, 20, -30, 40]
 
 List.to:
   short: slice a list to an end index
@@ -636,28 +601,24 @@ List.to:
       description: >
         The index up to which elements should be included.
   example: |
-    >> [10, 20, 30, 40, 50].to(3)
-    = [10, 20, 30]
-
-    >> [10, 20, 30, 40, 50].to(-2)
-    = [10, 20, 30, 40]
+    assert [10, 20, 30, 40, 50].to(3) == [10, 20, 30]
+    assert [10, 20, 30, 40, 50].to(-2) == [10, 20, 30, 40]
 
 List.unique:
-  short: convert a list to a set
+  short: get the unique items in a list
   description: >
-    Returns a Set that contains the unique elements of the list.
+    Returns a list of the unique elements of the list.
   return:
-    type: '|T|'
+    type: '[T]'
     description: >
-      A set containing only unique elements from the list.
+      A list of the unique elements from the list.
   args:
     list:
       type: '[T]'
       description: >
         The list to process.
   example: |
-    >> [10, 20, 10, 10, 30].unique()
-    = {10, 20, 30}
+    assert [10, 20, 10, 10, 30].unique() == [10, 20, 30]
 
 List.where:
   short: find an index where a predicate matches
@@ -679,7 +640,5 @@ List.where:
         A function that returns `yes` if the item's index should be returned or
         `no` if it should not.
   example: |
-    >> [4, 5, 6].where(func(i:&Int): i.is_prime())
-    = 5 : Int?
-    >> [4, 6, 8].find(func(i:&Int): i.is_prime())
-    = none : Int?
+    assert [4, 5, 6].where(func(i:&Int): i.is_prime()) == 5
+    assert [4, 6, 8].find(func(i:&Int): i.is_prime()) == none
diff --git a/api/nums.md b/api/nums.md
index ef771171..dac5967f 100644
--- a/api/nums.md
+++ b/api/nums.md
@@ -132,8 +132,7 @@ n | `Num` | The number whose absolute value is to be computed.  | -
 
 **Example:**
 ```tomo
->> (-3.5).abs()
-= 3.5
+assert (-3.5).abs() == 3.5
 
 ```
 ## Num.acos
@@ -153,8 +152,7 @@ x | `Num` | The number for which the arc cosine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).acos() // -> (π/2)
-= 1.5708
+assert (0.0).acos() == 1.5708
 
 ```
 ## Num.acosh
@@ -174,8 +172,7 @@ x | `Num` | The number for which the inverse hyperbolic cosine is to be calculat
 
 **Example:**
 ```tomo
->> (1.0).acosh()
-= 0
+assert (1.0).acosh() == 0
 
 ```
 ## Num.asin
@@ -195,8 +192,7 @@ x | `Num` | The number for which the arc sine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.5).asin()  // -> (π/6)
-= 0.5236
+assert (0.5).asin() == 0.5236
 
 ```
 ## Num.asinh
@@ -216,8 +212,7 @@ x | `Num` | The number for which the inverse hyperbolic sine is to be calculated
 
 **Example:**
 ```tomo
->> (0.0).asinh()
-= 0
+assert (0.0).asinh() == 0
 
 ```
 ## Num.atan
@@ -237,8 +232,7 @@ x | `Num` | The number for which the arc tangent is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).atan() // -> (π/4)
-= 0.7854
+assert (1.0).atan() == 0.7854
 
 ```
 ## Num.atan2
@@ -259,8 +253,7 @@ y | `Num` | The denominator.  | -
 
 **Example:**
 ```tomo
->> Num.atan2(1, 1) // -> (π/4)
-= 0.7854
+assert Num.atan2(1, 1) == 0.7854
 
 ```
 ## Num.atanh
@@ -280,8 +273,7 @@ x | `Num` | The number for which the inverse hyperbolic tangent is to be calcula
 
 **Example:**
 ```tomo
->> (0.5).atanh()
-= 0.5493
+assert (0.5).atanh() == 0.5493
 
 ```
 ## Num.cbrt
@@ -301,8 +293,7 @@ x | `Num` | The number for which the cube root is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (27.0).cbrt()
-= 3
+assert (27.0).cbrt() == 3
 
 ```
 ## Num.ceil
@@ -322,8 +313,7 @@ x | `Num` | The number to be rounded up.  | -
 
 **Example:**
 ```tomo
->> (3.2).ceil()
-= 4
+assert (3.2).ceil() == 4
 
 ```
 ## Num.clamped
@@ -345,8 +335,7 @@ high | `Num` | The highest value the result can take.  | -
 
 **Example:**
 ```tomo
->> (2.5).clamped(5.5, 10.5)
-= 5.5
+assert (2.5).clamped(5.5, 10.5) == 5.5
 
 ```
 ## Num.copysign
@@ -367,8 +356,7 @@ y | `Num` | The number whose sign will be copied.  | -
 
 **Example:**
 ```tomo
->> (3.0).copysign(-1)
-= -3
+assert (3.0).copysign(-1) == -3
 
 ```
 ## Num.cos
@@ -388,8 +376,7 @@ x | `Num` | The angle in radians.  | -
 
 **Example:**
 ```tomo
->> (0.0).cos()
-= 1
+assert (0.0).cos() == 1
 
 ```
 ## Num.cosh
@@ -409,8 +396,7 @@ x | `Num` | The number for which the hyperbolic cosine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).cosh()
-= 1
+assert (0.0).cosh() == 1
 
 ```
 ## Num.erf
@@ -430,8 +416,7 @@ x | `Num` | The number for which the error function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).erf()
-= 0
+assert (0.0).erf() == 0
 
 ```
 ## Num.erfc
@@ -451,8 +436,7 @@ x | `Num` | The number for which the complementary error function is to be calcu
 
 **Example:**
 ```tomo
->> (0.0).erfc()
-= 1
+assert (0.0).erfc() == 1
 
 ```
 ## Num.exp
@@ -472,8 +456,7 @@ x | `Num` | The exponent.  | -
 
 **Example:**
 ```tomo
->> (1.0).exp()
-= 2.7183
+assert (1.0).exp() == 2.7183
 
 ```
 ## Num.exp2
@@ -493,8 +476,7 @@ x | `Num` | The exponent.  | -
 
 **Example:**
 ```tomo
->> (3.0).exp2()
-= 8
+assert (3.0).exp2() == 8
 
 ```
 ## Num.expm1
@@ -514,8 +496,7 @@ x | `Num` | The exponent.  | -
 
 **Example:**
 ```tomo
->> (1.0).expm1()
-= 1.7183
+assert (1.0).expm1() == 1.7183
 
 ```
 ## Num.fdim
@@ -538,8 +519,7 @@ y | `Num` | The second number.  | -
 ```tomo
 fd
 
->> (5.0).fdim(3)
-= 2
+assert (5.0).fdim(3) == 2
 
 ```
 ## Num.floor
@@ -559,8 +539,7 @@ x | `Num` | The number to be rounded down.  | -
 
 **Example:**
 ```tomo
->> (3.7).floor()
-= 3
+assert (3.7).floor() == 3
 
 ```
 ## Num.hypot
@@ -581,8 +560,7 @@ y | `Num` | The second number.  | -
 
 **Example:**
 ```tomo
->> Num.hypot(3, 4)
-= 5
+assert Num.hypot(3, 4) == 5
 
 ```
 ## Num.is_between
@@ -604,12 +582,9 @@ high | `Num` | The upper bound to check (inclusive).  | -
 
 **Example:**
 ```tomo
->> (7.5).is_between(1, 10)
-= yes
->> (7.5).is_between(100, 200)
-= no
->> (7.5).is_between(1, 7.5)
-= yes
+assert (7.5).is_between(1, 10) == yes
+assert (7.5).is_between(100, 200) == no
+assert (7.5).is_between(1, 7.5) == yes
 
 ```
 ## Num.isfinite
@@ -629,10 +604,8 @@ n | `Num` | The number to be checked.  | -
 
 **Example:**
 ```tomo
->> (1.0).isfinite()
-= yes
->> Num.INF.isfinite()
-= no
+assert (1.0).isfinite() == yes
+assert Num.INF.isfinite() == no
 
 ```
 ## Num.isinf
@@ -652,10 +625,8 @@ n | `Num` | The number to be checked.  | -
 
 **Example:**
 ```tomo
->> Num.INF.isinf()
-= yes
->> (1.0).isinf()
-= no
+assert Num.INF.isinf() == yes
+assert (1.0).isinf() == no
 
 ```
 ## Num.j0
@@ -675,8 +646,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).j0()
-= 1
+assert (0.0).j0() == 1
 
 ```
 ## Num.j1
@@ -696,8 +666,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).j1()
-= 0
+assert (0.0).j1() == 0
 
 ```
 ## Num.log
@@ -717,8 +686,7 @@ x | `Num` | The number for which the natural logarithm is to be calculated.  | -
 
 **Example:**
 ```tomo
->> Num.E.log()
-= 1
+assert Num.E.log() == 1
 
 ```
 ## Num.log10
@@ -738,8 +706,7 @@ x | `Num` | The number for which the base-10 logarithm is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (100.0).log10()
-= 2
+assert (100.0).log10() == 2
 
 ```
 ## Num.log1p
@@ -759,8 +726,7 @@ x | `Num` | The number for which $\log(1 + x)$ is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).log1p()
-= 0.6931
+assert (1.0).log1p() == 0.6931
 
 ```
 ## Num.log2
@@ -780,8 +746,7 @@ x | `Num` | The number for which the base-2 logarithm is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (8.0).log2()
-= 3
+assert (8.0).log2() == 3
 
 ```
 ## Num.logb
@@ -801,8 +766,7 @@ x | `Num` | The number for which the binary exponent is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (8.0).logb()
-= 3
+assert (8.0).logb() == 3
 
 ```
 ## Num.mix
@@ -824,10 +788,8 @@ y | `Num` | The ending number.  | -
 
 **Example:**
 ```tomo
->> (0.5).mix(10, 20)
-= 15
->> (0.25).mix(10, 20)
-= 12.5
+assert (0.5).mix(10, 20) == 15
+assert (0.25).mix(10, 20) == 12.5
 
 ```
 ## Num.near
@@ -850,14 +812,9 @@ min_epsilon | `Num` | The absolute tolerance. Default is `1e-9`.  | `1e-9`
 
 **Example:**
 ```tomo
->> (1.0).near(1.000000001)
-= yes
-
->> (100.0).near(110, ratio=0.1)
-= yes
-
->> (5.0).near(5.1, min_epsilon=0.1)
-= yes
+assert (1.0).near(1.000000001) == yes
+assert (100.0).near(110, ratio=0.1) == yes
+assert (5.0).near(5.1, min_epsilon=0.1) == yes
 
 ```
 ## Num.nextafter
@@ -878,8 +835,7 @@ y | `Num` | The direction towards which to find the next representable value.  |
 
 **Example:**
 ```tomo
->> (1.0).nextafter(1.1)
-= 1.0000000000000002
+assert (1.0).nextafter(1.1) == 1.0000000000000002
 
 ```
 ## Num.parse
@@ -900,18 +856,12 @@ remainder | `&Text?` | If non-none, this argument will be set to the remainder o
 
 **Example:**
 ```tomo
->> Num.parse("3.14")
-= 3.14 : Num?
->> Num.parse("1e3")
-= 1000 : Num?
-
->> Num.parse("1.5junk")
-= none : Num?
+assert Num.parse("3.14") == 3.14
+assert Num.parse("1e3") == 1000
+assert Num.parse("1.5junk") == none
 remainder : Text
->> Num.parse("1.5junk", &remainder)
-= 1.5 : Num?
->> remainder
-= "junk"
+assert Num.parse("1.5junk", &remainder) == 1.5
+assert remainder == "junk"
 
 ```
 ## Num.percent
@@ -932,14 +882,10 @@ precision | `Num` | Round the percentage to this precision level.  | `0.01`
 
 **Example:**
 ```tomo
->> (0.5).percent()
-= "50%"
->> (1./3.).percent(2)
-= "33.33%"
->> (1./3.).percent(2, precision=0.0001)
-= "33.3333%"
->> (1./3.).percent(2, precision=10.)
-= "30%"
+assert (0.5).percent() == "50%"
+assert (1./3.).percent(2) == "33.33%"
+assert (1./3.).percent(2, precision=0.0001) == "33.3333%"
+assert (1./3.).percent(2, precision=10.) == "30%"
 
 ```
 ## Num.rint
@@ -959,10 +905,8 @@ x | `Num` | The number to be rounded.  | -
 
 **Example:**
 ```tomo
->> (3.5).rint()
-= 4
->> (2.5).rint()
-= 2
+assert (3.5).rint() == 4
+assert (2.5).rint() == 2
 
 ```
 ## Num.round
@@ -982,10 +926,8 @@ x | `Num` | The number to be rounded.  | -
 
 **Example:**
 ```tomo
->> (2.3).round()
-= 2
->> (2.7).round()
-= 3
+assert (2.3).round() == 2
+assert (2.7).round() == 3
 
 ```
 ## Num.significand
@@ -1005,8 +947,7 @@ x | `Num` | The number from which to extract the significand.  | -
 
 **Example:**
 ```tomo
->> (1234.567).significand()
-= 0.1234567
+assert (1234.567).significand() == 0.1234567
 
 ```
 ## Num.sin
@@ -1026,8 +967,7 @@ x | `Num` | The angle in radians.  | -
 
 **Example:**
 ```tomo
->> (0.0).sin()
-= 0
+assert (0.0).sin() == 0
 
 ```
 ## Num.sinh
@@ -1047,8 +987,7 @@ x | `Num` | The number for which the hyperbolic sine is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (0.0).sinh()
-= 0
+assert (0.0).sinh() == 0
 
 ```
 ## Num.sqrt
@@ -1068,8 +1007,7 @@ x | `Num` | The number for which the square root is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (16.0).sqrt()
-= 4
+assert (16.0).sqrt() == 4
 
 ```
 ## Num.tan
@@ -1089,8 +1027,7 @@ x | `Num` | The angle in radians.  | -
 
 **Example:**
 ```tomo
->> (0.0).tan()
-= 0
+assert (0.0).tan() == 0
 
 ```
 ## Num.tanh
@@ -1110,8 +1047,7 @@ x | `Num` | The number for which the hyperbolic tangent is to be calculated.  |
 
 **Example:**
 ```tomo
->> (0.0).tanh()
-= 0
+assert (0.0).tanh() == 0
 
 ```
 ## Num.tgamma
@@ -1131,8 +1067,7 @@ x | `Num` | The number for which the gamma function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).tgamma()
-= 1
+assert (1.0).tgamma() == 1
 
 ```
 ## Num.trunc
@@ -1152,10 +1087,8 @@ x | `Num` | The number to be truncated.  | -
 
 **Example:**
 ```tomo
->> (3.7).trunc()
-= 3
->> (-3.7).trunc()
-= -3
+assert (3.7).trunc() == 3
+assert (-3.7).trunc() == -3
 
 ```
 ## Num.with_precision
@@ -1176,12 +1109,9 @@ precision | `Num` | The precision to which the number should be rounded.  | -
 
 **Example:**
 ```tomo
->> (0.1234567).with_precision(0.01)
-= 0.12
->> (123456.).with_precision(100)
-= 123500
->> (1234567.).with_precision(5)
-= 1234565
+assert (0.1234567).with_precision(0.01) == 0.12
+assert (123456.).with_precision(100) == 123500
+assert (1234567.).with_precision(5) == 1234565
 
 ```
 ## Num.y0
@@ -1201,8 +1131,7 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).y0()
-= -0.7652
+assert (1.0).y0() == -0.7652
 
 ```
 ## Num.y1
@@ -1222,7 +1151,6 @@ x | `Num` | The number for which the Bessel function is to be calculated.  | -
 
 **Example:**
 ```tomo
->> (1.0).y1()
-= 0.4401
+assert (1.0).y1() == 0.4401
 
 ```
diff --git a/api/nums.yaml b/api/nums.yaml
index bae87a5b..4561bb91 100644
--- a/api/nums.yaml
+++ b/api/nums.yaml
@@ -12,8 +12,7 @@ Num.abs:
       description: >
         The number whose absolute value is to be computed.
   example: |
-    >> (-3.5).abs()
-    = 3.5
+    assert (-3.5).abs() == 3.5
 
 Num.acos:
   short: arc cosine
@@ -29,8 +28,7 @@ Num.acos:
       description: >
         The number for which the arc cosine is to be calculated.
   example: |
-    >> (0.0).acos() // -> (π/2)
-    = 1.5708
+    assert (0.0).acos() == 1.5708
 
 Num.acosh:
   short: arc hyperbolic cosine
@@ -46,8 +44,7 @@ Num.acosh:
       description: >
         The number for which the inverse hyperbolic cosine is to be calculated.
   example: |
-    >> (1.0).acosh()
-    = 0
+    assert (1.0).acosh() == 0
 
 Num.asin:
   short: arc sine
@@ -63,8 +60,7 @@ Num.asin:
       description: >
         The number for which the arc sine is to be calculated.
   example: |
-    >> (0.5).asin()  // -> (π/6)
-    = 0.5236
+    assert (0.5).asin() == 0.5236
 
 Num.asinh:
   short: arc hyperbolic sine
@@ -80,8 +76,7 @@ Num.asinh:
       description: >
         The number for which the inverse hyperbolic sine is to be calculated.
   example: |
-    >> (0.0).asinh()
-    = 0
+    assert (0.0).asinh() == 0
 
 Num.atan:
   short: arc tangent
@@ -97,8 +92,7 @@ Num.atan:
       description: >
         The number for which the arc tangent is to be calculated.
   example: |
-    >> (1.0).atan() // -> (π/4)
-    = 0.7854
+    assert (1.0).atan() == 0.7854
 
 Num.atan2:
   short: arc tangent from 2 variables
@@ -118,8 +112,7 @@ Num.atan2:
       description: >
         The denominator.
   example: |
-    >> Num.atan2(1, 1) // -> (π/4)
-    = 0.7854
+    assert Num.atan2(1, 1) == 0.7854
 
 Num.atanh:
   short: arc hyperbolic tangent.
@@ -135,8 +128,7 @@ Num.atanh:
       description: >
         The number for which the inverse hyperbolic tangent is to be calculated.
   example: |
-    >> (0.5).atanh()
-    = 0.5493
+    assert (0.5).atanh() == 0.5493
 
 Num.cbrt:
   short: cube root
@@ -152,8 +144,7 @@ Num.cbrt:
       description: >
         The number for which the cube root is to be calculated.
   example: |
-    >> (27.0).cbrt()
-    = 3
+    assert (27.0).cbrt() == 3
 
 Num.ceil:
   short: ceiling function
@@ -169,8 +160,7 @@ Num.ceil:
       description: >
         The number to be rounded up.
   example: |
-    >> (3.2).ceil()
-    = 4
+    assert (3.2).ceil() == 4
 
 Num.clamped:
   short: clamp a number
@@ -195,8 +185,7 @@ Num.clamped:
       description: >
         The highest value the result can take.
   example: |
-    >> (2.5).clamped(5.5, 10.5)
-    = 5.5
+    assert (2.5).clamped(5.5, 10.5) == 5.5
 
 Num.copysign:
   short: copy a number's sign
@@ -216,8 +205,7 @@ Num.copysign:
       description: >
         The number whose sign will be copied.
   example: |
-    >> (3.0).copysign(-1)
-    = -3
+    assert (3.0).copysign(-1) == -3
 
 Num.cos:
   short: cosine
@@ -233,8 +221,7 @@ Num.cos:
       description: >
         The angle in radians.
   example: |
-    >> (0.0).cos()
-    = 1
+    assert (0.0).cos() == 1
 
 Num.cosh:
   short: hyperbolic cosine
@@ -250,8 +237,7 @@ Num.cosh:
       description: >
         The number for which the hyperbolic cosine is to be calculated.
   example: |
-    >> (0.0).cosh()
-    = 1
+    assert (0.0).cosh() == 1
 
 Num.erf:
   short: error function
@@ -267,8 +253,7 @@ Num.erf:
       description: >
         The number for which the error function is to be calculated.
   example: |
-    >> (0.0).erf()
-    = 0
+    assert (0.0).erf() == 0
 
 Num.erfc:
   short: complimentary error function
@@ -284,8 +269,7 @@ Num.erfc:
       description: >
         The number for which the complementary error function is to be calculated.
   example: |
-    >> (0.0).erfc()
-    = 1
+    assert (0.0).erfc() == 1
 
 Num.exp:
   short: base-e exponentiation
@@ -301,8 +285,7 @@ Num.exp:
       description: >
         The exponent.
   example: |
-    >> (1.0).exp()
-    = 2.7183
+    assert (1.0).exp() == 2.7183
 
 Num.exp2:
   short: base-2 exponentiation
@@ -318,8 +301,7 @@ Num.exp2:
       description: >
         The exponent.
   example: |
-    >> (3.0).exp2()
-    = 8
+    assert (3.0).exp2() == 8
 
 Num.expm1:
   short: base-e exponential minus 1
@@ -335,8 +317,7 @@ Num.expm1:
       description: >
         The exponent.
   example: |
-    >> (1.0).expm1()
-    = 1.7183
+    assert (1.0).expm1() == 1.7183
 
 Num.fdim:
   short: positive difference
@@ -358,8 +339,7 @@ Num.fdim:
   example: |
     fd
 
-    >> (5.0).fdim(3)
-    = 2
+    assert (5.0).fdim(3) == 2
 
 Num.floor:
   short: floor function
@@ -375,8 +355,7 @@ Num.floor:
       description: >
         The number to be rounded down.
   example: |
-    >> (3.7).floor()
-    = 3
+    assert (3.7).floor() == 3
 
 Num.hypot:
   short: Euclidean distance function
@@ -396,8 +375,7 @@ Num.hypot:
       description: >
         The second number.
   example: |
-    >> Num.hypot(3, 4)
-    = 5
+    assert Num.hypot(3, 4) == 5
 
 Num.isfinite:
   short: check for finite number
@@ -413,10 +391,8 @@ Num.isfinite:
       description: >
         The number to be checked.
   example: |
-    >> (1.0).isfinite()
-    = yes
-    >> Num.INF.isfinite()
-    = no
+    assert (1.0).isfinite() == yes
+    assert Num.INF.isfinite() == no
 
 Num.is_between:
   short: check if a number is in a range
@@ -440,12 +416,9 @@ Num.is_between:
       description: >
         The upper bound to check (inclusive).
   example: |
-    >> (7.5).is_between(1, 10)
-    = yes
-    >> (7.5).is_between(100, 200)
-    = no
-    >> (7.5).is_between(1, 7.5)
-    = yes
+    assert (7.5).is_between(1, 10) == yes
+    assert (7.5).is_between(100, 200) == no
+    assert (7.5).is_between(1, 7.5) == yes
 
 Num.isinf:
   short: check for infinite number
@@ -461,10 +434,8 @@ Num.isinf:
       description: >
         The number to be checked.
   example: |
-    >> Num.INF.isinf()
-    = yes
-    >> (1.0).isinf()
-    = no
+    assert Num.INF.isinf() == yes
+    assert (1.0).isinf() == no
 
 Num.j0:
   short: Bessel function
@@ -480,8 +451,7 @@ Num.j0:
       description: >
         The number for which the Bessel function is to be calculated.
   example: |
-    >> (0.0).j0()
-    = 1
+    assert (0.0).j0() == 1
 
 Num.j1:
   short: Bessel function
@@ -497,8 +467,7 @@ Num.j1:
       description: >
         The number for which the Bessel function is to be calculated.
   example: |
-    >> (0.0).j1()
-    = 0
+    assert (0.0).j1() == 0
 
 Num.log:
   short: natural logarithm
@@ -514,8 +483,7 @@ Num.log:
       description: >
         The number for which the natural logarithm is to be calculated.
   example: |
-    >> Num.E.log()
-    = 1
+    assert Num.E.log() == 1
 
 Num.log10:
   short: logarithm base-10
@@ -531,8 +499,7 @@ Num.log10:
       description: >
         The number for which the base-10 logarithm is to be calculated.
   example: |
-    >> (100.0).log10()
-    = 2
+    assert (100.0).log10() == 2
 
 Num.log1p:
   short: logarithm of 1 plus x
@@ -548,8 +515,7 @@ Num.log1p:
       description: >
         The number for which $\log(1 + x)$ is to be calculated.
   example: |
-    >> (1.0).log1p()
-    = 0.6931
+    assert (1.0).log1p() == 0.6931
 
 Num.log2:
   short: logarithm base-2
@@ -565,8 +531,7 @@ Num.log2:
       description: >
         The number for which the base-2 logarithm is to be calculated.
   example: |
-    >> (8.0).log2()
-    = 3
+    assert (8.0).log2() == 3
 
 Num.logb:
   short: exponent of a floating point value
@@ -582,8 +547,7 @@ Num.logb:
       description: >
         The number for which the binary exponent is to be calculated.
   example: |
-    >> (8.0).logb()
-    = 3
+    assert (8.0).logb() == 3
 
 Num.mix:
   short: mix two numbers by an amount
@@ -607,10 +571,8 @@ Num.mix:
       description: >
         The ending number.
   example: |
-    >> (0.5).mix(10, 20)
-    = 15
-    >> (0.25).mix(10, 20)
-    = 12.5
+    assert (0.5).mix(10, 20) == 15
+    assert (0.25).mix(10, 20) == 12.5
 
 Num.near:
   short: check if two numbers are near each other
@@ -642,14 +604,9 @@ Num.near:
       description: >
         The absolute tolerance. Default is `1e-9`.
   example: |
-    >> (1.0).near(1.000000001)
-    = yes
-
-    >> (100.0).near(110, ratio=0.1)
-    = yes
-
-    >> (5.0).near(5.1, min_epsilon=0.1)
-    = yes
+    assert (1.0).near(1.000000001) == yes
+    assert (100.0).near(110, ratio=0.1) == yes
+    assert (5.0).near(5.1, min_epsilon=0.1) == yes
 
 Num.nextafter:
   short: next floating point number
@@ -669,8 +626,7 @@ Num.nextafter:
       description: >
         The direction towards which to find the next representable value.
   example: |
-    >> (1.0).nextafter(1.1)
-    = 1.0000000000000002
+    assert (1.0).nextafter(1.1) == 1.0000000000000002
 
 Num.parse:
   short: convert text to number
@@ -693,18 +649,12 @@ Num.parse:
         If non-none, this argument will be set to the remainder of the text after the matching part.
         If none, parsing will only succeed if the entire text matches.
   example: |
-    >> Num.parse("3.14")
-    = 3.14 : Num?
-    >> Num.parse("1e3")
-    = 1000 : Num?
-
-    >> Num.parse("1.5junk")
-    = none : Num?
+    assert Num.parse("3.14") == 3.14
+    assert Num.parse("1e3") == 1000
+    assert Num.parse("1.5junk") == none
     remainder : Text
-    >> Num.parse("1.5junk", &remainder)
-    = 1.5 : Num?
-    >> remainder
-    = "junk"
+    assert Num.parse("1.5junk", &remainder) == 1.5
+    assert remainder == "junk"
 
 Num.percent:
   short: format as a percentage
@@ -725,14 +675,10 @@ Num.percent:
       description: >
         Round the percentage to this precision level.
   example: |
-    >> (0.5).percent()
-    = "50%"
-    >> (1./3.).percent(2)
-    = "33.33%"
-    >> (1./3.).percent(2, precision=0.0001)
-    = "33.3333%"
-    >> (1./3.).percent(2, precision=10.)
-    = "30%"
+    assert (0.5).percent() == "50%"
+    assert (1./3.).percent(2) == "33.33%"
+    assert (1./3.).percent(2, precision=0.0001) == "33.3333%"
+    assert (1./3.).percent(2, precision=10.) == "30%"
 
 Num.with_precision:
   short: round to a given precision
@@ -752,12 +698,9 @@ Num.with_precision:
       description: >
         The precision to which the number should be rounded.
   example: |
-    >> (0.1234567).with_precision(0.01)
-    = 0.12
-    >> (123456.).with_precision(100)
-    = 123500
-    >> (1234567.).with_precision(5)
-    = 1234565
+    assert (0.1234567).with_precision(0.01) == 0.12
+    assert (123456.).with_precision(100) == 123500
+    assert (1234567.).with_precision(5) == 1234565
 
 Num.rint:
   short: round to nearest integer
@@ -773,10 +716,8 @@ Num.rint:
       description: >
         The number to be rounded.
   example: |
-    >> (3.5).rint()
-    = 4
-    >> (2.5).rint()
-    = 2
+    assert (3.5).rint() == 4
+    assert (2.5).rint() == 2
 
 Num.round:
   short: round to nearest integer
@@ -792,10 +733,8 @@ Num.round:
       description: >
         The number to be rounded.
   example: |
-    >> (2.3).round()
-    = 2
-    >> (2.7).round()
-    = 3
+    assert (2.3).round() == 2
+    assert (2.7).round() == 3
 
 Num.significand:
   short: get mantissa
@@ -811,8 +750,7 @@ Num.significand:
       description: >
         The number from which to extract the significand.
   example: |
-    >> (1234.567).significand()
-    = 0.1234567
+    assert (1234.567).significand() == 0.1234567
 
 Num.sin:
   short: sine
@@ -828,8 +766,7 @@ Num.sin:
       description: >
         The angle in radians.
   example: |
-    >> (0.0).sin()
-    = 0
+    assert (0.0).sin() == 0
 
 Num.sinh:
   short: hyperbolic sine
@@ -845,8 +782,7 @@ Num.sinh:
       description: >
         The number for which the hyperbolic sine is to be calculated.
   example: |
-    >> (0.0).sinh()
-    = 0
+    assert (0.0).sinh() == 0
 
 Num.sqrt:
   short: square root
@@ -862,8 +798,7 @@ Num.sqrt:
       description: >
         The number for which the square root is to be calculated.
   example: |
-    >> (16.0).sqrt()
-    = 4
+    assert (16.0).sqrt() == 4
 
 Num.tan:
   short: tangent
@@ -879,8 +814,7 @@ Num.tan:
       description: >
         The angle in radians.
   example: |
-    >> (0.0).tan()
-    = 0
+    assert (0.0).tan() == 0
 
 Num.tanh:
   short: hyperbolic tangent
@@ -896,8 +830,7 @@ Num.tanh:
       description: >
         The number for which the hyperbolic tangent is to be calculated.
   example: |
-    >> (0.0).tanh()
-    = 0
+    assert (0.0).tanh() == 0
 
 Num.tgamma:
   short: "true gamma function"
@@ -913,8 +846,7 @@ Num.tgamma:
       description: >
         The number for which the gamma function is to be calculated.
   example: |
-    >> (1.0).tgamma()
-    = 1
+    assert (1.0).tgamma() == 1
 
 Num.trunc:
   short: truncate a number
@@ -930,10 +862,8 @@ Num.trunc:
       description: >
         The number to be truncated.
   example: |
-    >> (3.7).trunc()
-    = 3
-    >> (-3.7).trunc()
-    = -3
+    assert (3.7).trunc() == 3
+    assert (-3.7).trunc() == -3
 
 Num.y0:
   short: Bessel function
@@ -949,8 +879,7 @@ Num.y0:
       description: >
         The number for which the Bessel function is to be calculated.
   example: |
-    >> (1.0).y0()
-    = -0.7652
+    assert (1.0).y0() == -0.7652
 
 Num.y1:
   short: Bessel function
@@ -966,8 +895,7 @@ Num.y1:
       description: >
         The number for which the Bessel function is to be calculated.
   example: |
-    >> (1.0).y1()
-    = 0.4401
+    assert (1.0).y1() == 0.4401
 
 
 Num.1_PI:
diff --git a/api/paths.md b/api/paths.md
index aade9b0f..c69e91d9 100644
--- a/api/paths.md
+++ b/api/paths.md
@@ -21,10 +21,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).accessed()
-= 1704221100?
->> (./not-a-file).accessed()
-= none
+assert (./file.txt).accessed() == 1704221100
+assert (./not-a-file).accessed() == none
 
 ```
 ## Path.append
@@ -88,8 +86,7 @@ path | `Path` | The path of the file or directory.  | -
 
 **Example:**
 ```tomo
->> (./path/to/file.txt).base_name()
-= "file.txt"
+assert (./path/to/file.txt).base_name() == "file.txt"
 
 ```
 ## Path.by_line
@@ -138,12 +135,9 @@ path | `Path` | The path of the file to check.  | -
 
 **Example:**
 ```tomo
->> (/bin/sh).can_execute()
-= yes
->> (/usr/include/stdlib.h).can_execute()
-= no
->> (/non/existant/file).can_execute()
-= no
+assert (/bin/sh).can_execute() == yes
+assert (/usr/include/stdlib.h).can_execute() == no
+assert (/non/existant/file).can_execute() == no
 
 ```
 ## Path.can_read
@@ -163,12 +157,9 @@ path | `Path` | The path of the file to check.  | -
 
 **Example:**
 ```tomo
->> (/usr/include/stdlib.h).can_read()
-= yes
->> (/etc/shadow).can_read()
-= no
->> (/non/existant/file).can_read()
-= no
+assert (/usr/include/stdlib.h).can_read() == yes
+assert (/etc/shadow).can_read() == no
+assert (/non/existant/file).can_read() == no
 
 ```
 ## Path.can_write
@@ -188,12 +179,9 @@ path | `Path` | The path of the file to check.  | -
 
 **Example:**
 ```tomo
->> (/tmp).can_write()
-= yes
->> (/etc/passwd).can_write()
-= no
->> (/non/existant/file).can_write()
-= no
+assert (/tmp).can_write() == yes
+assert (/etc/passwd).can_write() == no
+assert (/non/existant/file).can_write() == no
 
 ```
 ## Path.changed
@@ -216,10 +204,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).changed()
-= 1704221100?
->> (./not-a-file).changed()
-= none
+assert (./file.txt).changed() == 1704221100
+assert (./not-a-file).changed() == none
 
 ```
 ## Path.child
@@ -240,8 +226,7 @@ child | `Text` | The name of a child file or directory.  | -
 
 **Example:**
 ```tomo
->> (./directory).child("file.txt")
-= (./directory/file.txt)
+assert (./directory).child("file.txt") == (./directory/file.txt)
 
 ```
 ## Path.children
@@ -262,8 +247,7 @@ include_hidden | `` | Whether to include hidden files, which start with a `.`.
 
 **Example:**
 ```tomo
->> (./directory).children(include_hidden=yes)
-= [".git", "foo.txt"]
+assert (./directory).children(include_hidden=yes) == [".git", "foo.txt"]
 
 ```
 ## Path.create_directory
@@ -301,8 +285,7 @@ Creates a new directory at the specified path with the given permissions. If any
 
 **Example:**
 ```tomo
->> Path.current_dir()
-= (/home/user/tomo)
+assert Path.current_dir() == (/home/user/tomo)
 
 ```
 ## Path.exists
@@ -322,8 +305,7 @@ path | `Path` | The path to check.  | -
 
 **Example:**
 ```tomo
->> (/).exists()
-= yes
+assert (/).exists() == yes
 
 ```
 ## Path.expand_home
@@ -343,10 +325,10 @@ path | `Path` | The path to expand.  | -
 
 **Example:**
 ```tomo
->> (~/foo).expand_home() # Assume current user is 'user'
-= /home/user/foo
->> (/foo).expand_home() # No change
-= /foo
+# Assume current user is 'user'
+assert (~/foo).expand_home() == (/home/user/foo)
+# No change
+assert (/foo).expand_home() == (/foo)
 
 ```
 ## Path.extension
@@ -367,14 +349,10 @@ full | `Bool` | Whether to return everything after the first `.` in the base nam
 
 **Example:**
 ```tomo
->> (./file.tar.gz).extension()
-= "tar.gz"
->> (./file.tar.gz).extension(full=no)
-= "gz"
->> (/foo).extension()
-= ""
->> (./.git).extension()
-= ""
+assert (./file.tar.gz).extension() == "tar.gz"
+assert (./file.tar.gz).extension(full=no) == "gz"
+assert (/foo).extension() == ""
+assert (./.git).extension() == ""
 
 ```
 ## Path.files
@@ -395,8 +373,7 @@ include_hidden | `Bool` | Whether to include hidden files.  | `no`
 
 **Example:**
 ```tomo
->> (./directory).files(include_hidden=yes)
-= [(./directory/file1.txt), (./directory/file2.txt)]
+assert (./directory).files(include_hidden=yes) == [(./directory/file1.txt), (./directory/file2.txt)]
 
 ```
 ## Path.from_components
@@ -416,12 +393,9 @@ components | `[Text]` | A list of path components.  | -
 
 **Example:**
 ```tomo
->> Path.from_components(["/", "usr", "include"])
-= /usr/include
->> Path.from_components(["foo.txt"])
-= ./foo.txt
->> Path.from_components(["~", ".local"])
-= ~/.local
+assert Path.from_components(["/", "usr", "include"]) == (/usr/include)
+assert Path.from_components(["foo.txt"]) == (./foo.txt)
+assert Path.from_components(["~", ".local"]) == (~/.local)
 
 ```
 ## Path.glob
@@ -448,21 +422,13 @@ path | `Path` | The path of the directory which may contain special globbing cha
 **Example:**
 ```tomo
 # Current directory includes: foo.txt, baz.txt, qux.jpg, .hidden
->> (./*).glob()
-= [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
->> (./*.txt).glob()
-= [(./foo.txt), (./baz.txt)]
-
->> (./*.{txt,jpg}).glob()
-= [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
->> (./.*).glob()
-= [(./.hidden)]
+assert (./*).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+assert (./*.txt).glob() == [(./foo.txt), (./baz.txt)]
+assert (./*.{txt,jpg}).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+assert (./.*).glob() == [(./.hidden)]
 
 # Globs with no matches return an empty list:
->> (./*.xxx).glob()
-= []
+assert (./*.xxx).glob() == []
 
 ```
 ## Path.group
@@ -483,10 +449,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (/bin).group()
-= "root"
->> (/non/existent/file).group()
-= none
+assert (/bin).group() == "root"
+assert (/non/existent/file).group() == none
 
 ```
 ## Path.has_extension
@@ -507,14 +471,10 @@ extension | `Text` | A file extension (leading `.` is optional). If empty, the c
 
 **Example:**
 ```tomo
->> (/foo.txt).has_extension("txt")
-= yes
->> (/foo.txt).has_extension(".txt")
-= yes
->> (/foo.tar.gz).has_extension("gz")
-= yes
->> (/foo.tar.gz).has_extension("zip")
-= no
+assert (/foo.txt).has_extension("txt") == yes
+assert (/foo.txt).has_extension(".txt") == yes
+assert (/foo.tar.gz).has_extension("gz") == yes
+assert (/foo.tar.gz).has_extension("zip") == no
 
 ```
 ## Path.is_directory
@@ -535,11 +495,8 @@ follow_symlinks | `` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./directory/).is_directory()
-= yes
-
->> (./file.txt).is_directory()
-= no
+assert (./directory/).is_directory() == yes
+assert (./file.txt).is_directory() == no
 
 ```
 ## Path.is_file
@@ -560,11 +517,8 @@ follow_symlinks | `` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).is_file()
-= yes
-
->> (./directory/).is_file()
-= no
+assert (./file.txt).is_file() == yes
+assert (./directory/).is_file() == no
 
 ```
 ## Path.is_socket
@@ -585,8 +539,7 @@ follow_symlinks | `` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./socket).is_socket()
-= yes
+assert (./socket).is_socket() == yes
 
 ```
 ## Path.is_symlink
@@ -606,8 +559,7 @@ path | `Path` | The path to check.  | -
 
 **Example:**
 ```tomo
->> (./link).is_symlink()
-= yes
+assert (./link).is_symlink() == yes
 
 ```
 ## Path.modified
@@ -628,10 +580,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (./file.txt).modified()
-= 1704221100?
->> (./not-a-file).modified()
-= none
+assert (./file.txt).modified() == 1704221100
+assert (./not-a-file).modified() == none
 
 ```
 ## Path.owner
@@ -652,10 +602,8 @@ follow_symlinks | `Bool` | Whether to follow symbolic links.  | `yes`
 
 **Example:**
 ```tomo
->> (/bin).owner()
-= "root"
->> (/non/existent/file).owner()
-= none
+assert (/bin).owner() == "root"
+assert (/non/existent/file).owner() == none
 
 ```
 ## Path.parent
@@ -675,8 +623,7 @@ path | `Path` | The path of the file or directory.  | -
 
 **Example:**
 ```tomo
->> (./path/to/file.txt).parent()
-= (./path/to/)
+assert (./path/to/file.txt).parent() == (./path/to/)
 
 ```
 ## Path.read
@@ -696,11 +643,8 @@ path | `Path` | The path of the file to read.  | -
 
 **Example:**
 ```tomo
->> (./hello.txt).read()
-= "Hello"?
-
->> (./nosuchfile.xxx).read()
-= none
+assert (./hello.txt).read() == "Hello"
+assert (./nosuchfile.xxx).read() == none
 
 ```
 ## Path.read_bytes
@@ -721,11 +665,8 @@ limit | `Int?` | A limit to how many bytes should be read.  | `none`
 
 **Example:**
 ```tomo
->> (./hello.txt).read()
-= [72, 101, 108, 108, 111]?
-
->> (./nosuchfile.xxx).read()
-= none
+assert (./hello.txt).read() == [72, 101, 108, 108, 111]
+assert (./nosuchfile.xxx).read() == none
 
 ```
 ## Path.relative_to
@@ -746,8 +687,7 @@ relative_to | `` | The base path for the relative path.  | `(./)`
 
 **Example:**
 ```tomo
->> (./path/to/file.txt).relative(relative_to=(./path))
-= (./to/file.txt)
+assert (./path/to/file.txt).relative(relative_to=(./path)) == (./to/file.txt)
 
 ```
 ## Path.remove
@@ -789,11 +729,8 @@ relative_to | `` | The base path for resolution.  | `(./)`
 
 **Example:**
 ```tomo
->> (~/foo).resolved()
-= (/home/user/foo)
-
->> (./path/to/file.txt).resolved(relative_to=(/foo))
-= (/foo/path/to/file.txt)
+assert (~/foo).resolved() == (/home/user/foo)
+assert (./path/to/file.txt).resolved(relative_to=(/foo)) == (/foo/path/to/file.txt)
 
 ```
 ## Path.set_owner
@@ -837,8 +774,7 @@ name | `Text` | The name of a sibling file or directory.  | -
 
 **Example:**
 ```tomo
->> (/foo/baz).sibling("doop")
-= (/foo/doop)
+assert (/foo/baz).sibling("doop") == (/foo/doop)
 
 ```
 ## Path.subdirectories
@@ -859,11 +795,8 @@ include_hidden | `` | Whether to include hidden subdirectories.  | `no`
 
 **Example:**
 ```tomo
->> (./directory).subdirectories()
-= [(./directory/subdir1), (./directory/subdir2)]
-
->> (./directory).subdirectories(include_hidden=yes)
-= [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
+assert (./directory).subdirectories() == [(./directory/subdir1), (./directory/subdir2)]
+assert (./directory).subdirectories(include_hidden=yes) == [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
 
 ```
 ## Path.unique_directory
@@ -883,10 +816,8 @@ path | `Path` | The base path for generating the unique directory. The last six
 
 **Example:**
 ```tomo
->> created := (/tmp/my-dir.XXXXXX).unique_directory()
-= (/tmp/my-dir-AwoxbM/)
->> created.is_directory()
-= yes
+assert created := (/tmp/my-dir.XXXXXX).unique_directory() == (/tmp/my-dir-AwoxbM/)
+assert created.is_directory() == yes
 created.remove()
 
 ```
@@ -952,10 +883,9 @@ text | `Text` | The text to write to the file.  | -
 
 **Example:**
 ```tomo
->> created := (./file-XXXXXX.txt).write_unique("Hello, world!")
-= (./file-27QHtq.txt)
->> created.read()
-= "Hello, world!"
+created := (./file-XXXXXX.txt).write_unique("Hello, world!")
+assert created == (./file-27QHtq.txt)
+assert created.read() == "Hello, world!"
 created.remove()
 
 ```
@@ -977,10 +907,9 @@ bytes | `[Byte]` | The bytes to write to the file.  | -
 
 **Example:**
 ```tomo
->> created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
-= (./file-27QHtq.txt)
->> created.read()
-= [1, 2, 3]
+created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
+assert created == (./file-27QHtq.txt)
+assert created.read() == [1, 2, 3]
 created.remove()
 
 ```
diff --git a/api/paths.yaml b/api/paths.yaml
index 1e62b250..532d9c71 100644
--- a/api/paths.yaml
+++ b/api/paths.yaml
@@ -18,10 +18,8 @@ Path.accessed:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (./file.txt).accessed()
-    = 1704221100?
-    >> (./not-a-file).accessed()
-    = none
+    assert (./file.txt).accessed() == 1704221100
+    assert (./not-a-file).accessed() == none
 
 Path.append:
   short: append to a file
@@ -89,8 +87,7 @@ Path.base_name:
       description: >
         The path of the file or directory.
   example: |
-    >> (./path/to/file.txt).base_name()
-    = "file.txt"
+    assert (./path/to/file.txt).base_name() == "file.txt"
 
 Path.by_line:
   short: iterate by line
@@ -133,12 +130,9 @@ Path.can_execute:
       description: >
         The path of the file to check.
   example: |
-    >> (/bin/sh).can_execute()
-    = yes
-    >> (/usr/include/stdlib.h).can_execute()
-    = no
-    >> (/non/existant/file).can_execute()
-    = no
+    assert (/bin/sh).can_execute() == yes
+    assert (/usr/include/stdlib.h).can_execute() == no
+    assert (/non/existant/file).can_execute() == no
 
 Path.can_read:
   short: check read permissions
@@ -154,12 +148,9 @@ Path.can_read:
       description: >
         The path of the file to check.
   example: |
-    >> (/usr/include/stdlib.h).can_read()
-    = yes
-    >> (/etc/shadow).can_read()
-    = no
-    >> (/non/existant/file).can_read()
-    = no
+    assert (/usr/include/stdlib.h).can_read() == yes
+    assert (/etc/shadow).can_read() == no
+    assert (/non/existant/file).can_read() == no
 
 Path.can_write:
   short: check write permissions
@@ -175,12 +166,9 @@ Path.can_write:
       description: >
         The path of the file to check.
   example: |
-    >> (/tmp).can_write()
-    = yes
-    >> (/etc/passwd).can_write()
-    = no
-    >> (/non/existant/file).can_write()
-    = no
+    assert (/tmp).can_write() == yes
+    assert (/etc/passwd).can_write() == no
+    assert (/non/existant/file).can_write() == no
 
 Path.changed:
   short: get the last changed time
@@ -205,10 +193,8 @@ Path.changed:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (./file.txt).changed()
-    = 1704221100?
-    >> (./not-a-file).changed()
-    = none
+    assert (./file.txt).changed() == 1704221100
+    assert (./not-a-file).changed() == none
 
 Path.child:
   short: append a child to a path
@@ -228,8 +214,7 @@ Path.child:
       description: >
         The name of a child file or directory.
   example: |
-    >> (./directory).child("file.txt")
-    = (./directory/file.txt)
+    assert (./directory).child("file.txt") == (./directory/file.txt)
 
 Path.children:
   short: get children of a directory
@@ -249,8 +234,7 @@ Path.children:
       description: >
         Whether to include hidden files, which start with a `.`.
   example: |
-    >> (./directory).children(include_hidden=yes)
-    = [".git", "foo.txt"]
+    assert (./directory).children(include_hidden=yes) == [".git", "foo.txt"]
 
 Path.create_directory:
   short: make a directory
@@ -284,8 +268,7 @@ Path.current_dir:
       The absolute path of the current directory.
   args:
   example: |
-    >> Path.current_dir()
-    = (/home/user/tomo)
+    assert Path.current_dir() == (/home/user/tomo)
 
 Path.exists:
   short: check if a path exists
@@ -301,8 +284,7 @@ Path.exists:
       description: >
         The path to check.
   example: |
-    >> (/).exists()
-    = yes
+    assert (/).exists() == yes
 
 Path.expand_home:
   short: 'expand ~ to $HOME'
@@ -320,10 +302,10 @@ Path.expand_home:
       description: >
         The path to expand.
   example: |
-    >> (~/foo).expand_home() # Assume current user is 'user'
-    = /home/user/foo
-    >> (/foo).expand_home() # No change
-    = /foo
+    # Assume current user is 'user'
+    assert (~/foo).expand_home() == (/home/user/foo)
+    # No change
+    assert (/foo).expand_home() == (/foo)
 
 Path.extension:
   short: get file extension
@@ -346,14 +328,10 @@ Path.extension:
         Whether to return everything after the first `.` in the base name, or
         only the last part of the extension.
   example: |
-    >> (./file.tar.gz).extension()
-    = "tar.gz"
-    >> (./file.tar.gz).extension(full=no)
-    = "gz"
-    >> (/foo).extension()
-    = ""
-    >> (./.git).extension()
-    = ""
+    assert (./file.tar.gz).extension() == "tar.gz"
+    assert (./file.tar.gz).extension(full=no) == "gz"
+    assert (/foo).extension() == ""
+    assert (./.git).extension() == ""
 
 Path.files:
   short: list files in a directory
@@ -374,8 +352,7 @@ Path.files:
       description: >
         Whether to include hidden files.
   example: |
-    >> (./directory).files(include_hidden=yes)
-    = [(./directory/file1.txt), (./directory/file2.txt)]
+    assert (./directory).files(include_hidden=yes) == [(./directory/file1.txt), (./directory/file2.txt)]
 
 Path.from_components:
   short: build a path from components
@@ -391,12 +368,9 @@ Path.from_components:
       description: >
         A list of path components.
   example: |
-    >> Path.from_components(["/", "usr", "include"])
-    = /usr/include
-    >> Path.from_components(["foo.txt"])
-    = ./foo.txt
-    >> Path.from_components(["~", ".local"])
-    = ~/.local
+    assert Path.from_components(["/", "usr", "include"]) == (/usr/include)
+    assert Path.from_components(["foo.txt"]) == (./foo.txt)
+    assert Path.from_components(["~", ".local"]) == (~/.local)
 
 Path.glob:
   short: perform file globbing
@@ -424,21 +398,13 @@ Path.glob:
         like `*`, `?`, or `{...}`
   example: |
     # Current directory includes: foo.txt, baz.txt, qux.jpg, .hidden
-    >> (./*).glob()
-    = [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
-    >> (./*.txt).glob()
-    = [(./foo.txt), (./baz.txt)]
-
-    >> (./*.{txt,jpg}).glob()
-    = [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
-    >> (./.*).glob()
-    = [(./.hidden)]
+    assert (./*).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+    assert (./*.txt).glob() == [(./foo.txt), (./baz.txt)]
+    assert (./*.{txt,jpg}).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+    assert (./.*).glob() == [(./.hidden)]
 
     # Globs with no matches return an empty list:
-    >> (./*.xxx).glob()
-    = []
+    assert (./*.xxx).glob() == []
 
 Path.group:
   short: get the owning group
@@ -459,10 +425,8 @@ Path.group:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (/bin).group()
-    = "root"
-    >> (/non/existent/file).group()
-    = none
+    assert (/bin).group() == "root"
+    assert (/non/existent/file).group() == none
 
 Path.has_extension:
   short: check if a path has a given extension
@@ -483,14 +447,10 @@ Path.has_extension:
         A file extension (leading `.` is optional). If empty, the check will
         test if the file does not have any file extension.
   example: |
-    >> (/foo.txt).has_extension("txt")
-    = yes
-    >> (/foo.txt).has_extension(".txt")
-    = yes
-    >> (/foo.tar.gz).has_extension("gz")
-    = yes
-    >> (/foo.tar.gz).has_extension("zip")
-    = no
+    assert (/foo.txt).has_extension("txt") == yes
+    assert (/foo.txt).has_extension(".txt") == yes
+    assert (/foo.tar.gz).has_extension("gz") == yes
+    assert (/foo.tar.gz).has_extension("zip") == no
 
 Path.is_directory:
   short: check if a path is a directory
@@ -510,11 +470,8 @@ Path.is_directory:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (./directory/).is_directory()
-    = yes
-
-    >> (./file.txt).is_directory()
-    = no
+    assert (./directory/).is_directory() == yes
+    assert (./file.txt).is_directory() == no
 
 Path.is_file:
   short: check if a path is a file
@@ -534,11 +491,8 @@ Path.is_file:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (./file.txt).is_file()
-    = yes
-
-    >> (./directory/).is_file()
-    = no
+    assert (./file.txt).is_file() == yes
+    assert (./directory/).is_file() == no
 
 Path.is_socket:
   short: check if a path is a socket
@@ -558,8 +512,7 @@ Path.is_socket:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (./socket).is_socket()
-    = yes
+    assert (./socket).is_socket() == yes
 
 Path.is_symlink:
   short: check if a path is a symbolic link
@@ -575,8 +528,7 @@ Path.is_symlink:
       description: >
         The path to check.
   example: |
-    >> (./link).is_symlink()
-    = yes
+    assert (./link).is_symlink() == yes
 
 Path.modified:
   short: get file modification time
@@ -598,10 +550,8 @@ Path.modified:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (./file.txt).modified()
-    = 1704221100?
-    >> (./not-a-file).modified()
-    = none
+    assert (./file.txt).modified() == 1704221100
+    assert (./not-a-file).modified() == none
 
 Path.owner:
   short: get file owner
@@ -622,10 +572,8 @@ Path.owner:
       description: >
         Whether to follow symbolic links.
   example: |
-    >> (/bin).owner()
-    = "root"
-    >> (/non/existent/file).owner()
-    = none
+    assert (/bin).owner() == "root"
+    assert (/non/existent/file).owner() == none
 
 Path.parent:
   short: get parent directory
@@ -641,8 +589,7 @@ Path.parent:
       description: >
         The path of the file or directory.
   example: |
-    >> (./path/to/file.txt).parent()
-    = (./path/to/)
+    assert (./path/to/file.txt).parent() == (./path/to/)
 
 Path.read:
   short: read file contents
@@ -661,11 +608,8 @@ Path.read:
       description: >
         The path of the file to read.
   example: |
-    >> (./hello.txt).read()
-    = "Hello"?
-
-    >> (./nosuchfile.xxx).read()
-    = none
+    assert (./hello.txt).read() == "Hello"
+    assert (./nosuchfile.xxx).read() == none
 
 Path.read_bytes:
   short: read file contents as bytes
@@ -688,11 +632,8 @@ Path.read_bytes:
       description: >
         A limit to how many bytes should be read.
   example: |
-    >> (./hello.txt).read()
-    = [72, 101, 108, 108, 111]?
-
-    >> (./nosuchfile.xxx).read()
-    = none
+    assert (./hello.txt).read() == [72, 101, 108, 108, 111]
+    assert (./nosuchfile.xxx).read() == none
 
 Path.relative_to:
   short: apply a relative path to another
@@ -712,8 +653,7 @@ Path.relative_to:
       description: >
         The base path for the relative path.
   example: |
-    >> (./path/to/file.txt).relative(relative_to=(./path))
-    = (./to/file.txt)
+    assert (./path/to/file.txt).relative(relative_to=(./path)) == (./to/file.txt)
 
 Path.remove:
   short: remove a file or directory
@@ -753,11 +693,8 @@ Path.resolved:
       description: >
         The base path for resolution.
   example: |
-    >> (~/foo).resolved()
-    = (/home/user/foo)
-
-    >> (./path/to/file.txt).resolved(relative_to=(/foo))
-    = (/foo/path/to/file.txt)
+    assert (~/foo).resolved() == (/home/user/foo)
+    assert (./path/to/file.txt).resolved(relative_to=(/foo)) == (/foo/path/to/file.txt)
 
 Path.set_owner:
   short: set the owner
@@ -809,8 +746,7 @@ Path.sibling:
       description: >
         The name of a sibling file or directory.
   example: |
-    >> (/foo/baz).sibling("doop")
-    = (/foo/doop)
+    assert (/foo/baz).sibling("doop") == (/foo/doop)
 
 Path.subdirectories:
   short: get subdirectories
@@ -830,11 +766,8 @@ Path.subdirectories:
       description: >
         Whether to include hidden subdirectories.
   example: |
-    >> (./directory).subdirectories()
-    = [(./directory/subdir1), (./directory/subdir2)]
-
-    >> (./directory).subdirectories(include_hidden=yes)
-    = [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
+    assert (./directory).subdirectories() == [(./directory/subdir1), (./directory/subdir2)]
+    assert (./directory).subdirectories(include_hidden=yes) == [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
 
 Path.unique_directory:
   short: create a directory with a unique name
@@ -850,10 +783,8 @@ Path.unique_directory:
       description: >
         The base path for generating the unique directory. The last six letters of this path must be `XXXXXX`.
   example: |
-    >> created := (/tmp/my-dir.XXXXXX).unique_directory()
-    = (/tmp/my-dir-AwoxbM/)
-    >> created.is_directory()
-    = yes
+    assert created := (/tmp/my-dir.XXXXXX).unique_directory() == (/tmp/my-dir-AwoxbM/)
+    assert created.is_directory() == yes
     created.remove()
 
 Path.write:
@@ -929,10 +860,9 @@ Path.write_unique:
       description: >
         The text to write to the file.
   example: |
-    >> created := (./file-XXXXXX.txt).write_unique("Hello, world!")
-    = (./file-27QHtq.txt)
-    >> created.read()
-    = "Hello, world!"
+    created := (./file-XXXXXX.txt).write_unique("Hello, world!")
+    assert created == (./file-27QHtq.txt)
+    assert created.read() == "Hello, world!"
     created.remove()
 
 Path.write_unique_bytes:
@@ -956,9 +886,8 @@ Path.write_unique_bytes:
       description: >
         The bytes to write to the file.
   example: |
-    >> created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
-    = (./file-27QHtq.txt)
-    >> created.read()
-    = [1, 2, 3]
+    created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
+    assert created == (./file-27QHtq.txt)
+    assert created.read() == [1, 2, 3]
     created.remove()
 
diff --git a/api/tables.md b/api/tables.md
index 1d8490db..bbe7ce7b 100644
--- a/api/tables.md
+++ b/api/tables.md
@@ -20,7 +20,9 @@ t | `&{K:V}` | The reference to the table.  | -
 
 **Example:**
 ```tomo
->> t.clear()
+t := &{"A":1}
+t.clear()
+assert t == {}
 
 ```
 ## Table.difference
@@ -66,18 +68,11 @@ key | `K` | The key whose associated value is to be retrieved.  | -
 
 **Example:**
 ```tomo
->> t := {"A": 1, "B": 2}
->> t.get("A")
-= 1?
-
->> t.get("????")
-= none
-
->> t.get("A")!
-= 1
-
->> t.get("????") or 0
-= 0
+t := {"A": 1, "B": 2}
+assert t.get("A") == 1
+assert t.get("????") == none
+assert t.get("A")! == 1
+assert t.get("????") or 0 == 0
 
 ```
 ## Table.get_or_set
@@ -102,16 +97,13 @@ default | `V` | The default value to insert and return if the key is not present
 
 **Example:**
 ```tomo
->> t := &{"A": @[1, 2, 3]; default=@[]}
->> t.get_or_set("A").insert(4)
->> t.get_or_set("B").insert(99)
->> t
-= &{"A": @[1, 2, 3, 4], "B": @[99]}
+t := &{"A": @[1, 2, 3]; default=@[]}
+t.get_or_set("A").insert(4)
+t.get_or_set("B").insert(99)
+assert t == &{"A": @[1, 2, 3, 4], "B": @[99]}
 
->> t.get_or_set("C", @[0, 0, 0])
-= @[0, 0, 0]
->> t
-= &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
+assert t.get_or_set("C", @[0, 0, 0]) == @[0, 0, 0]
+assert t == &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
 
 ```
 ## Table.has
@@ -132,10 +124,8 @@ key | `K` | The key to check for presence.  | -
 
 **Example:**
 ```tomo
->> {"A": 1, "B": 2}.has("A")
-= yes
->> {"A": 1, "B": 2}.has("xxx")
-= no
+assert {"A": 1, "B": 2}.has("A") == yes
+assert {"A": 1, "B": 2}.has("xxx") == no
 
 ```
 ## Table.intersection
@@ -181,8 +171,7 @@ key | `K` | The key of the key-value pair to remove.  | -
 ```tomo
 t := {"A": 1, "B": 2}
 t.remove("A")
->> t
-= {"B": 2}
+assert t == {"B": 2}
 
 ```
 ## Table.set
@@ -206,8 +195,7 @@ value | `V` | The value to associate with the key.  | -
 ```tomo
 t := {"A": 1, "B": 2}
 t.set("C", 3)
->> t
-= {"A": 1, "B": 2, "C": 3}
+assert t == {"A": 1, "B": 2, "C": 3}
 
 ```
 ## Table.with
@@ -252,11 +240,9 @@ fallback | `{K:V}?` | The new fallback table value.  | -
 ```tomo
 t := {"A": 1; fallback={"B": 2}}
 t2 = t.with_fallback({"B": 3"})
->> t2["B"]
-= 3?
+assert t2["B"] == 3
 t3 = t.with_fallback(none)
->> t2["B"]
-= none
+assert t2["B"] == none
 
 ```
 ## Table.without
diff --git a/api/tables.yaml b/api/tables.yaml
index ce56c77e..e03805dc 100644
--- a/api/tables.yaml
+++ b/api/tables.yaml
@@ -12,7 +12,9 @@ Table.clear:
       description: >
         The reference to the table.
   example: |
-    >> t.clear()
+    t := &{"A":1}
+    t.clear()
+    assert t == {}
 
 Table.difference:
   short: return a table using keys not present in both tables
@@ -58,18 +60,11 @@ Table.get:
       description: >
         The key whose associated value is to be retrieved.
   example: |
-    >> t := {"A": 1, "B": 2}
-    >> t.get("A")
-    = 1?
-
-    >> t.get("????")
-    = none
-
-    >> t.get("A")!
-    = 1
-
-    >> t.get("????") or 0
-    = 0
+    t := {"A": 1, "B": 2}
+    assert t.get("A") == 1
+    assert t.get("????") == none
+    assert t.get("A")! == 1
+    assert t.get("????") or 0 == 0
 
 Table.get_or_set:
   short: get an item or set a default if absent
@@ -100,16 +95,13 @@ Table.get_or_set:
       description: >
         The default value to insert and return if the key is not present in the table.
   example: |
-    >> t := &{"A": @[1, 2, 3]; default=@[]}
-    >> t.get_or_set("A").insert(4)
-    >> t.get_or_set("B").insert(99)
-    >> t
-    = &{"A": @[1, 2, 3, 4], "B": @[99]}
+    t := &{"A": @[1, 2, 3]; default=@[]}
+    t.get_or_set("A").insert(4)
+    t.get_or_set("B").insert(99)
+    assert t == &{"A": @[1, 2, 3, 4], "B": @[99]}
 
-    >> t.get_or_set("C", @[0, 0, 0])
-    = @[0, 0, 0]
-    >> t
-    = &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
+    assert t.get_or_set("C", @[0, 0, 0]) == @[0, 0, 0]
+    assert t == &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
 
 Table.has:
   short: check for a key
@@ -129,10 +121,8 @@ Table.has:
       description: >
         The key to check for presence.
   example: |
-    >> {"A": 1, "B": 2}.has("A")
-    = yes
-    >> {"A": 1, "B": 2}.has("xxx")
-    = no
+    assert {"A": 1, "B": 2}.has("A") == yes
+    assert {"A": 1, "B": 2}.has("xxx") == no
 
 Table.intersection:
   short: return a table with common key/value pairs from two tables
@@ -177,8 +167,7 @@ Table.remove:
   example: |
     t := {"A": 1, "B": 2}
     t.remove("A")
-    >> t
-    = {"B": 2}
+    assert t == {"B": 2}
 
 Table.set:
   short: set a table entry
@@ -204,8 +193,7 @@ Table.set:
   example: |
     t := {"A": 1, "B": 2}
     t.set("C", 3)
-    >> t
-    = {"A": 1, "B": 2, "C": 3}
+    assert t == {"A": 1, "B": 2, "C": 3}
 
 Table.with:
   short: return a table with values added from another table
@@ -273,8 +261,6 @@ Table.with_fallback:
   example: |
     t := {"A": 1; fallback={"B": 2}}
     t2 = t.with_fallback({"B": 3"})
-    >> t2["B"]
-    = 3?
+    assert t2["B"] == 3
     t3 = t.with_fallback(none)
-    >> t2["B"]
-    = none
+    assert t2["B"] == none
diff --git a/api/text.md b/api/text.md
index 22f08242..9bd99529 100644
--- a/api/text.md
+++ b/api/text.md
@@ -20,8 +20,7 @@ text | `Text` | The text to be converted to a C-style string.  | -
 
 **Example:**
 ```tomo
->> "Hello".as_c_string()
-= CString("Hello")
+assert "Hello".as_c_string() == CString("Hello")
 
 ```
 ## Text.at
@@ -44,8 +43,7 @@ index | `Int` | The index of the graphical cluster (1-indexed).  | -
 
 **Example:**
 ```tomo
->> "Amélie".at(3)
-= "é"
+assert "Amélie".at(3) == "é"
 
 ```
 ## Text.by_line
@@ -149,12 +147,10 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "A".caseless_equals("a")
-= yes
+assert "A".caseless_equals("a") == yes
 
 # Turkish lowercase "I" is "ı" (dotless I), not "i"
->> "I".caseless_equals("i", language="tr_TR")
-= no
+assert "I".caseless_equals("i", language="tr_TR") == no
 
 ```
 ## Text.codepoint_names
@@ -174,8 +170,14 @@ text | `Text` | The text from which to extract codepoint names.  | -
 
 **Example:**
 ```tomo
->> "Amélie".codepoint_names()
-= ["LATIN CAPITAL LETTER A", "LATIN SMALL LETTER M", "LATIN SMALL LETTER E WITH ACUTE", "LATIN SMALL LETTER L", "LATIN SMALL LETTER I", "LATIN SMALL LETTER E"]
+assert "Amélie".codepoint_names() == [
+    "LATIN CAPITAL LETTER A",
+    "LATIN SMALL LETTER M",
+    "LATIN SMALL LETTER E WITH ACUTE",
+    "LATIN SMALL LETTER L",
+    "LATIN SMALL LETTER I",
+    "LATIN SMALL LETTER E",
+]
 
 ```
 ## Text.ends_with
@@ -197,13 +199,10 @@ remainder | `&Text?` | If non-none, this value will be set to the rest of the te
 
 **Example:**
 ```tomo
->> "hello world".ends_with("world")
-= yes
+assert "hello world".ends_with("world") == yes
 remainder : Text
->> "hello world".ends_with("world", &remainder)
-= yes
->> remainder
-= "hello "
+assert "hello world".ends_with("world", &remainder) == yes
+assert remainder == "hello "
 
 ```
 ## Text.from
@@ -226,11 +225,8 @@ first | `Int` | The index to begin the slice.  | -
 
 **Example:**
 ```tomo
->> "hello".from(2)
-= "ello"
-
->> "hello".from(-2)
-= "lo"
+assert "hello".from(2) == "ello"
+assert "hello".from(-2) == "lo"
 
 ```
 ## Text.from_c_string
@@ -250,8 +246,7 @@ str | `CString` | The C-style string to be converted.  | -
 
 **Example:**
 ```tomo
->> Text.from_c_string(CString("Hello"))
-= "Hello"
+assert Text.from_c_string(CString("Hello")) == "Hello"
 
 ```
 ## Text.from_codepoint_names
@@ -273,12 +268,12 @@ codepoint_names | `[Text]` | The names of each codepoint in the desired text (ca
 
 **Example:**
 ```tomo
->> Text.from_codepoint_names([
-"LATIN CAPITAL LETTER A WITH RING ABOVE",
-"LATIN SMALL LETTER K",
-"LATIN SMALL LETTER E",
+text := Text.from_codepoint_names([
+    "LATIN CAPITAL LETTER A WITH RING ABOVE",
+    "LATIN SMALL LETTER K",
+    "LATIN SMALL LETTER E",
 ]
-= "Åke"
+assert text == "Åke"
 
 ```
 ## Text.from_utf16
@@ -300,10 +295,8 @@ bytes | `[Int16]` | The UTF-16 integers of the desired text.  | -
 
 **Example:**
 ```tomo
->> Text.from_utf16([197, 107, 101])
-= "Åke"
->> Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028])
-= "こんにちは世界".utf16()
+assert Text.from_utf16([197, 107, 101]) == "Åke"
+assert Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028]) == "こんにちは世界".utf16()
 
 ```
 ## Text.from_utf32
@@ -325,8 +318,7 @@ codepoints | `[Int32]` | The UTF32 codepoints in the desired text.  | -
 
 **Example:**
 ```tomo
->> Text.from_utf32([197, 107, 101])
-= "Åke"
+assert Text.from_utf32([197, 107, 101]) == "Åke"
 
 ```
 ## Text.from_utf8
@@ -348,8 +340,7 @@ bytes | `[Byte]` | The UTF-8 bytes of the desired text.  | -
 
 **Example:**
 ```tomo
->> Text.from_utf8([195, 133, 107, 101])
-= "Åke"
+assert Text.from_utf8([195, 133, 107, 101]) == "Åke"
 
 ```
 ## Text.has
@@ -370,10 +361,8 @@ target | `Text` | The text to search for.  | -
 
 **Example:**
 ```tomo
->> "hello world".has("wo")
-= yes
->> "hello world".has("xxx")
-= no
+assert "hello world".has("wo") == yes
+assert "hello world".has("xxx") == no
 
 ```
 ## Text.join
@@ -394,8 +383,7 @@ pieces | `[Text]` | The list of text pieces to be joined.  | -
 
 **Example:**
 ```tomo
->> ", ".join(["one", "two", "three"])
-= "one, two, three"
+assert ", ".join(["one", "two", "three"]) == "one, two, three"
 
 ```
 ## Text.left_pad
@@ -418,10 +406,8 @@ language | `Text` | The ISO 639 language code for which character width to use.
 
 **Example:**
 ```tomo
->> "x".left_pad(5)
-= "    x"
->> "x".left_pad(5, "ABC")
-= "ABCAx"
+assert "x".left_pad(5) == "    x"
+assert "x".left_pad(5, "ABC") == "ABCAx"
 
 ```
 ## Text.lines
@@ -441,16 +427,11 @@ text | `Text` | The text to be split into lines.  | -
 
 **Example:**
 ```tomo
->> "one\ntwo\nthree".lines()
-= ["one", "two", "three"]
->> "one\ntwo\nthree\n".lines()
-= ["one", "two", "three"]
->> "one\ntwo\nthree\n\n".lines()
-= ["one", "two", "three", ""]
->> "one\r\ntwo\r\nthree\r\n".lines()
-= ["one", "two", "three"]
->> "".lines()
-= []
+assert "one\ntwo\nthree".lines() == ["one", "two", "three"]
+assert "one\ntwo\nthree\n".lines() == ["one", "two", "three"]
+assert "one\ntwo\nthree\n\n".lines() == ["one", "two", "three", ""]
+assert "one\r\ntwo\r\nthree\r\n".lines() == ["one", "two", "three"]
+assert "".lines() == []
 
 ```
 ## Text.lower
@@ -471,11 +452,8 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "AMÉLIE".lower()
-= "amélie"
-
->> "I".lower(language="tr_TR")
->> "ı"
+assert "AMÉLIE".lower() == "amélie"
+assert "I".lower(language="tr_TR") == "ı"
 
 ```
 ## Text.middle_pad
@@ -498,10 +476,8 @@ language | `Text` | The ISO 639 language code for which character width to use.
 
 **Example:**
 ```tomo
->> "x".middle_pad(6)
-= "  x   "
->> "x".middle_pad(10, "ABC")
-= "ABCAxABCAB"
+assert "x".middle_pad(6) == "  x   "
+assert "x".middle_pad(10, "ABC") == "ABCAxABCAB"
 
 ```
 ## Text.quoted
@@ -523,8 +499,7 @@ quotation_mark | `Text` | The quotation mark to use.  | ``"``
 
 **Example:**
 ```tomo
->> "one\ntwo".quoted()
-= "\"one\\ntwo\""
+assert "one\ntwo".quoted() == "\"one\\ntwo\""
 
 ```
 ## Text.repeat
@@ -545,8 +520,7 @@ count | `Int` | The number of times to repeat it. (Negative numbers are equivale
 
 **Example:**
 ```tomo
->> "Abc".repeat(3)
-= "AbcAbcAbc"
+assert "Abc".repeat(3) == "AbcAbcAbc"
 
 ```
 ## Text.replace
@@ -568,8 +542,7 @@ replacement | `Text` | The text to replace the target with.  | -
 
 **Example:**
 ```tomo
->> "Hello world".replace("world", "there")
-= "Hello there"
+assert "Hello world".replace("world", "there") == "Hello there"
 
 ```
 ## Text.reversed
@@ -589,8 +562,7 @@ text | `Text` | The text to reverse.  | -
 
 **Example:**
 ```tomo
->> "Abc".reversed()
-= "cbA"
+assert "Abc".reversed() == "cbA"
 
 ```
 ## Text.right_pad
@@ -613,10 +585,8 @@ language | `Text` | The ISO 639 language code for which character width to use.
 
 **Example:**
 ```tomo
->> "x".right_pad(5)
-= "x    "
->> "x".right_pad(5, "ABC")
-= "xABCA"
+assert "x".right_pad(5) == "x    "
+assert "x".right_pad(5, "ABC") == "xABCA"
 
 ```
 ## Text.slice
@@ -640,14 +610,9 @@ to | `Int` | The index of the last grapheme cluster to include (1-indexed).  | `
 
 **Example:**
 ```tomo
->> "hello".slice(2, 3)
-= "el"
-
->> "hello".slice(to=-2)
-= "hell"
-
->> "hello".slice(from=2)
-= "ello"
+assert "hello".slice(2, 3) == "el"
+assert "hello".slice(to=-2) == "hell"
+assert "hello".slice(from=2) == "ello"
 
 ```
 ## Text.split
@@ -671,11 +636,8 @@ delimiter | `Text` | The delimiter used to split the text.  | `""`
 
 **Example:**
 ```tomo
->> "one,two,,three".split(",")
-= ["one", "two", "", "three"]
-
->> "abc".split()
-= ["a", "b", "c"]
+assert "one,two,,three".split(",") == ["one", "two", "", "three"]
+assert "abc".split() == ["a", "b", "c"]
 
 ```
 ## Text.split_any
@@ -699,8 +661,7 @@ delimiters | `Text` | A text containing delimiters to use for splitting the text
 
 **Example:**
 ```tomo
->> "one, two,,three".split_any(", ")
-= ["one", "two", "three"]
+assert "one, two,,three".split_any(", ") == ["one", "two", "three"]
 
 ```
 ## Text.starts_with
@@ -722,13 +683,10 @@ remainder | `&Text?` | If non-none, this value will be set to the rest of the te
 
 **Example:**
 ```tomo
->> "hello world".starts_with("hello")
-= yes
+assert "hello world".starts_with("hello") == yes
 remainder : Text
->> "hello world".starts_with("hello", &remainder)
-= yes
->> remainder
-= " world"
+assert "hello world".starts_with("hello", &remainder) == yes
+assert remainder == " world"
 
 ```
 ## Text.title
@@ -749,12 +707,10 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "amélie".title()
-= "Amélie"
+assert "amélie".title() == "Amélie"
 
 # In Turkish, uppercase "i" is "İ"
->> "i".title(language="tr_TR")
-= "İ"
+assert "i".title(language="tr_TR") == "İ"
 
 ```
 ## Text.to
@@ -777,11 +733,8 @@ last | `Int` | The index of the last grapheme cluster to include (1-indexed).  |
 
 **Example:**
 ```tomo
->> "goodbye".to(3)
-= "goo"
-
->> "goodbye".to(-2)
-= "goodby"
+assert "goodbye".to(3) == "goo"
+assert "goodbye".to(-2) == "goodby"
 
 ```
 ## Text.translate
@@ -802,14 +755,14 @@ translations | `{Text:Text}` | A table mapping from target text to its replaceme
 
 **Example:**
 ```tomo
->> "A <tag> & an amperand".translate({
+text := "A <tag> & an amperand".translate({
     "&": "&amp;",
     "<": "&lt;",
     ">": "&gt;",
     '"": "&quot",
     "'": "&#39;",
 })
-= "A &lt;tag&gt; &amp; an ampersand"
+assert text == "A &lt;tag&gt; &amp; an ampersand"
 
 ```
 ## Text.trim
@@ -832,14 +785,9 @@ right | `Bool` | Whether or not to trim from the back of the text.  | `yes`
 
 **Example:**
 ```tomo
->> "   x y z    \n".trim()
-= "x y z"
-
->> "one,".trim(",")
-= "one"
-
->> "   xyz   ".trim(right=no)
-= "xyz   "
+assert "   x y z    \n".trim() == "x y z"
+assert "one,".trim(",") == "one"
+assert "   xyz   ".trim(right=no) == "xyz   "
 
 ```
 ## Text.upper
@@ -860,12 +808,10 @@ language | `Text` | The ISO 639 language code for which casing rules to use.  |
 
 **Example:**
 ```tomo
->> "amélie".upper()
-= "AMÉLIE"
+assert "amélie".upper() == "AMÉLIE"
 
 # In Turkish, uppercase "i" is "İ"
->> "i".upper(language="tr_TR")
-= "İ"
+assert "i".upper(language="tr_TR") == "İ"
 
 ```
 ## Text.utf16
@@ -885,10 +831,8 @@ text | `Text` | The text from which to extract Unicode code points.  | -
 
 **Example:**
 ```tomo
->> "Åke".utf16()
-= [197, 107, 101]
->> "こんにちは世界".utf16()
-= [12371, 12435, 12395, 12385, 12399, 19990, 30028]
+assert "Åke".utf16() == [197, 107, 101]
+assert "こんにちは世界".utf16() == [12371, 12435, 12395, 12385, 12399, 19990, 30028]
 
 ```
 ## Text.utf32
@@ -908,8 +852,7 @@ text | `Text` | The text from which to extract Unicode code points.  | -
 
 **Example:**
 ```tomo
->> "Amélie".utf32()
-= [65, 109, 233, 108, 105, 101]
+assert "Amélie".utf32() == [65, 109, 233, 108, 105, 101]
 
 ```
 ## Text.utf8
@@ -929,8 +872,7 @@ text | `Text` | The text to be converted to UTF8 bytes.  | -
 
 **Example:**
 ```tomo
->> "Amélie".utf8()
-= [65, 109, 195, 169, 108, 105, 101]
+assert "Amélie".utf8() == [65, 109, 195, 169, 108, 105, 101]
 
 ```
 ## Text.width
@@ -952,10 +894,8 @@ text | `Text` | The text whose length you want.  | -
 
 **Example:**
 ```tomo
->> "Amélie".width()
-= 6
->> "🤠".width()
-= 2
+assert "Amélie".width() == 6
+assert "🤠".width() == 2
 
 ```
 ## Text.without_prefix
@@ -976,10 +916,8 @@ prefix | `Text` | The prefix to remove.  | -
 
 **Example:**
 ```tomo
->> "foo:baz".without_prefix("foo:")
-= "baz"
->> "qux".without_prefix("foo:")
-= "qux"
+assert "foo:baz".without_prefix("foo:") == "baz"
+assert "qux".without_prefix("foo:") == "qux"
 
 ```
 ## Text.without_suffix
@@ -1000,9 +938,7 @@ suffix | `Text` | The suffix to remove.  | -
 
 **Example:**
 ```tomo
->> "baz.foo".without_suffix(".foo")
-= "baz"
->> "qux".without_suffix(".foo")
-= "qux"
+assert "baz.foo".without_suffix(".foo") == "baz"
+assert "qux".without_suffix(".foo") == "qux"
 
 ```
diff --git a/api/text.yaml b/api/text.yaml
index dcdcfb67..2c21fa30 100644
--- a/api/text.yaml
+++ b/api/text.yaml
@@ -12,8 +12,7 @@ Text.as_c_string:
       description: >
         The text to be converted to a C-style string.
   example: |
-    >> "Hello".as_c_string()
-    = CString("Hello")
+    assert "Hello".as_c_string() == CString("Hello")
 
 Text.at:
   short: get a letter
@@ -37,8 +36,7 @@ Text.at:
       description: >
         The index of the graphical cluster (1-indexed).
   example: |
-    >> "Amélie".at(3)
-    = "é"
+    assert "Amélie".at(3) == "é"
 
 Text.by_line:
   short: iterate by line
@@ -144,8 +142,7 @@ Text.utf8:
       description: >
         The text to be converted to UTF8 bytes.
   example: |
-    >> "Amélie".utf8()
-    = [65, 109, 195, 169, 108, 105, 101]
+    assert "Amélie".utf8() == [65, 109, 195, 169, 108, 105, 101]
 
 Text.caseless_equals:
   short: case-insensitive comparison
@@ -171,12 +168,10 @@ Text.caseless_equals:
       description: >
         The ISO 639 language code for which casing rules to use.
   example: |
-    >> "A".caseless_equals("a")
-    = yes
+    assert "A".caseless_equals("a") == yes
 
     # Turkish lowercase "I" is "ı" (dotless I), not "i"
-    >> "I".caseless_equals("i", language="tr_TR")
-    = no
+    assert "I".caseless_equals("i", language="tr_TR") == no
 
 Text.codepoint_names:
   short: get unicode codepoint names
@@ -192,8 +187,14 @@ Text.codepoint_names:
       description: >
         The text from which to extract codepoint names.
   example: |
-    >> "Amélie".codepoint_names()
-    = ["LATIN CAPITAL LETTER A", "LATIN SMALL LETTER M", "LATIN SMALL LETTER E WITH ACUTE", "LATIN SMALL LETTER L", "LATIN SMALL LETTER I", "LATIN SMALL LETTER E"]
+    assert "Amélie".codepoint_names() == [
+        "LATIN CAPITAL LETTER A",
+        "LATIN SMALL LETTER M",
+        "LATIN SMALL LETTER E WITH ACUTE",
+        "LATIN SMALL LETTER L",
+        "LATIN SMALL LETTER I",
+        "LATIN SMALL LETTER E",
+    ]
 
 Text.ends_with:
   short: check suffix
@@ -219,13 +220,10 @@ Text.ends_with:
         If non-none, this value will be set to the rest of the text up to the trailing suffix.
         If the suffix is not found, this value will be set to the original text.
   example: |
-    >> "hello world".ends_with("world")
-    = yes
+    assert "hello world".ends_with("world") == yes
     remainder : Text
-    >> "hello world".ends_with("world", &remainder)
-    = yes
-    >> remainder
-    = "hello "
+    assert "hello world".ends_with("world", &remainder) == yes
+    assert remainder == "hello "
 
 Text.from:
   short: slice from a starting index
@@ -249,11 +247,8 @@ Text.from:
       description: >
         The index to begin the slice.
   example: |
-    >> "hello".from(2)
-    = "ello"
-
-    >> "hello".from(-2)
-    = "lo"
+    assert "hello".from(2) == "ello"
+    assert "hello".from(-2) == "lo"
 
 Text.from_utf8:
   short: convert UTF8 byte list to text
@@ -272,8 +267,7 @@ Text.from_utf8:
       description: >
         The UTF-8 bytes of the desired text.
   example: |
-    >> Text.from_utf8([195, 133, 107, 101])
-    = "Åke"
+    assert Text.from_utf8([195, 133, 107, 101]) == "Åke"
 
 Text.from_utf16:
   short: convert UTF16 list to text
@@ -292,10 +286,8 @@ Text.from_utf16:
       description: >
         The UTF-16 integers of the desired text.
   example: |
-    >> Text.from_utf16([197, 107, 101])
-    = "Åke"
-    >> Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028])
-    = "こんにちは世界".utf16()
+    assert Text.from_utf16([197, 107, 101]) == "Åke"
+    assert Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028]) == "こんにちは世界".utf16()
 
 Text.from_c_string:
   short: convert C-style string to text
@@ -311,8 +303,7 @@ Text.from_c_string:
       description: >
         The C-style string to be converted.
   example: |
-    >> Text.from_c_string(CString("Hello"))
-    = "Hello"
+    assert Text.from_c_string(CString("Hello")) == "Hello"
 
 Text.from_codepoint_names:
   short: convert list of unicode codepoint names to text
@@ -333,12 +324,12 @@ Text.from_codepoint_names:
       description: >
         The names of each codepoint in the desired text (case-insentive).
   example: |
-    >> Text.from_codepoint_names([
-    "LATIN CAPITAL LETTER A WITH RING ABOVE",
-    "LATIN SMALL LETTER K",
-    "LATIN SMALL LETTER E",
+    text := Text.from_codepoint_names([
+        "LATIN CAPITAL LETTER A WITH RING ABOVE",
+        "LATIN SMALL LETTER K",
+        "LATIN SMALL LETTER E",
     ]
-    = "Åke"
+    assert text == "Åke"
 
 Text.from_utf32:
   short: convert UTF32 codepoints to text
@@ -357,8 +348,7 @@ Text.from_utf32:
       description: >
         The UTF32 codepoints in the desired text.
   example: |
-    >> Text.from_utf32([197, 107, 101])
-    = "Åke"
+    assert Text.from_utf32([197, 107, 101]) == "Åke"
 
 Text.has:
   short: check for substring
@@ -378,10 +368,8 @@ Text.has:
       description: >
         The text to search for.
   example: |
-    >> "hello world".has("wo")
-    = yes
-    >> "hello world".has("xxx")
-    = no
+    assert "hello world".has("wo") == yes
+    assert "hello world".has("xxx") == no
 
 Text.join:
   short: concatenate with separator
@@ -401,8 +389,7 @@ Text.join:
       description: >
         The list of text pieces to be joined.
   example: |
-    >> ", ".join(["one", "two", "three"])
-    = "one, two, three"
+    assert ", ".join(["one", "two", "three"]) == "one, two, three"
 
 Text.middle_pad:
   short: pad text, centered
@@ -434,10 +421,8 @@ Text.middle_pad:
       description: >
         The ISO 639 language code for which character width to use.
   example: |
-    >> "x".middle_pad(6)
-    = "  x   "
-    >> "x".middle_pad(10, "ABC")
-    = "ABCAxABCAB"
+    assert "x".middle_pad(6) == "  x   "
+    assert "x".middle_pad(10, "ABC") == "ABCAxABCAB"
 
 Text.left_pad:
   short: left-pad text
@@ -469,10 +454,8 @@ Text.left_pad:
       description: >
         The ISO 639 language code for which character width to use.
   example: |
-    >> "x".left_pad(5)
-    = "    x"
-    >> "x".left_pad(5, "ABC")
-    = "ABCAx"
+    assert "x".left_pad(5) == "    x"
+    assert "x".left_pad(5, "ABC") == "ABCAx"
 
 Text.lines:
   short: get list of lines
@@ -489,16 +472,11 @@ Text.lines:
       description: >
         The text to be split into lines.
   example: |
-    >> "one\ntwo\nthree".lines()
-    = ["one", "two", "three"]
-    >> "one\ntwo\nthree\n".lines()
-    = ["one", "two", "three"]
-    >> "one\ntwo\nthree\n\n".lines()
-    = ["one", "two", "three", ""]
-    >> "one\r\ntwo\r\nthree\r\n".lines()
-    = ["one", "two", "three"]
-    >> "".lines()
-    = []
+    assert "one\ntwo\nthree".lines() == ["one", "two", "three"]
+    assert "one\ntwo\nthree\n".lines() == ["one", "two", "three"]
+    assert "one\ntwo\nthree\n\n".lines() == ["one", "two", "three", ""]
+    assert "one\r\ntwo\r\nthree\r\n".lines() == ["one", "two", "three"]
+    assert "".lines() == []
 
 Text.lower:
   short: convert to lowercase
@@ -519,11 +497,8 @@ Text.lower:
       description: >
         The ISO 639 language code for which casing rules to use.
   example: |
-    >> "AMÉLIE".lower()
-    = "amélie"
-
-    >> "I".lower(language="tr_TR")
-    >> "ı"
+    assert "AMÉLIE".lower() == "amélie"
+    assert "I".lower(language="tr_TR") == "ı"
 
 Text.quoted:
   short: add quotation marks and escapes
@@ -549,8 +524,7 @@ Text.quoted:
       description: >
         The quotation mark to use.
   example: |
-    >> "one\ntwo".quoted()
-    = "\"one\\ntwo\""
+    assert "one\ntwo".quoted() == "\"one\\ntwo\""
 
 Text.repeat:
   short: repeat text
@@ -570,8 +544,7 @@ Text.repeat:
       description: >
         The number of times to repeat it. (Negative numbers are equivalent to zero).
   example: |
-    >> "Abc".repeat(3)
-    = "AbcAbcAbc"
+    assert "Abc".repeat(3) == "AbcAbcAbc"
 
 Text.replace:
   short: replace a substring
@@ -595,8 +568,7 @@ Text.replace:
       description: >
         The text to replace the target with.
   example: |
-    >> "Hello world".replace("world", "there")
-    = "Hello there"
+    assert "Hello world".replace("world", "there") == "Hello there"
 
 Text.reversed:
   short: get a reversed copy
@@ -612,8 +584,7 @@ Text.reversed:
       description: >
         The text to reverse.
   example: |
-    >> "Abc".reversed()
-    = "cbA"
+    assert "Abc".reversed() == "cbA"
 
 Text.right_pad:
   short: right-pad text
@@ -645,10 +616,8 @@ Text.right_pad:
       description: >
         The ISO 639 language code for which character width to use.
   example: |
-    >> "x".right_pad(5)
-    = "x    "
-    >> "x".right_pad(5, "ABC")
-    = "xABCA"
+    assert "x".right_pad(5) == "x    "
+    assert "x".right_pad(5, "ABC") == "xABCA"
 
 Text.slice:
   short: get a slice of a text
@@ -678,14 +647,9 @@ Text.slice:
       description: >
         The index of the last grapheme cluster to include (1-indexed).
   example: |
-    >> "hello".slice(2, 3)
-    = "el"
-
-    >> "hello".slice(to=-2)
-    = "hell"
-
-    >> "hello".slice(from=2)
-    = "ello"
+    assert "hello".slice(2, 3) == "el"
+    assert "hello".slice(to=-2) == "hell"
+    assert "hello".slice(from=2) == "ello"
 
 Text.split:
   short: split a text by a delimiter
@@ -712,11 +676,8 @@ Text.split:
     graphical clusters of the text.
 
   example: |
-    >> "one,two,,three".split(",")
-    = ["one", "two", "", "three"]
-
-    >> "abc".split()
-    = ["a", "b", "c"]
+    assert "one,two,,three".split(",") == ["one", "two", "", "three"]
+    assert "abc".split() == ["a", "b", "c"]
 
 Text.split_any:
   short: split a text by multiple delimiters
@@ -743,8 +704,7 @@ Text.split_any:
 
     To split based on an exact delimiter, use Text.split().
   example: |
-    >> "one, two,,three".split_any(", ")
-    = ["one", "two", "three"]
+    assert "one, two,,three".split_any(", ") == ["one", "two", "three"]
 
 Text.starts_with:
   short: check prefix
@@ -770,13 +730,10 @@ Text.starts_with:
         If non-none, this value will be set to the rest of the text after the prefix.
         If the prefix is not found, this value will be set to the original text.
   example: |
-    >> "hello world".starts_with("hello")
-    = yes
+    assert "hello world".starts_with("hello") == yes
     remainder : Text
-    >> "hello world".starts_with("hello", &remainder)
-    = yes
-    >> remainder
-    = " world"
+    assert "hello world".starts_with("hello", &remainder) == yes
+    assert remainder == " world"
 
 Text.title:
   short: titlecase
@@ -797,12 +754,10 @@ Text.title:
       description: >
         The ISO 639 language code for which casing rules to use.
   example: |
-    >> "amélie".title()
-    = "Amélie"
+    assert "amélie".title() == "Amélie"
 
     # In Turkish, uppercase "i" is "İ"
-    >> "i".title(language="tr_TR")
-    = "İ"
+    assert "i".title(language="tr_TR") == "İ"
 
 Text.to:
   short: slice to an end index
@@ -826,11 +781,8 @@ Text.to:
       description: >
         The index of the last grapheme cluster to include (1-indexed).
   example: |
-    >> "goodbye".to(3)
-    = "goo"
-
-    >> "goodbye".to(-2)
-    = "goodby"
+    assert "goodbye".to(3) == "goo"
+    assert "goodbye".to(-2) == "goodby"
 
 Text.translate:
   short: perform multiple replacements
@@ -855,14 +807,14 @@ Text.translate:
       description: >
         A table mapping from target text to its replacement.
   example: |
-    >> "A <tag> & an amperand".translate({
+    text := "A <tag> & an amperand".translate({
         "&": "&amp;",
         "<": "&lt;",
         ">": "&gt;",
         '"": "&quot",
         "'": "&#39;",
     })
-    = "A &lt;tag&gt; &amp; an ampersand"
+    assert text == "A &lt;tag&gt; &amp; an ampersand"
 
 Text.trim:
   short: trim characters
@@ -893,14 +845,9 @@ Text.trim:
       description: >
         Whether or not to trim from the back of the text.
   example: |
-    >> "   x y z    \n".trim()
-    = "x y z"
-
-    >> "one,".trim(",")
-    = "one"
-
-    >> "   xyz   ".trim(right=no)
-    = "xyz   "
+    assert "   x y z    \n".trim() == "x y z"
+    assert "one,".trim(",") == "one"
+    assert "   xyz   ".trim(right=no) == "xyz   "
 
 Text.upper:
   short: uppercase
@@ -921,12 +868,10 @@ Text.upper:
       description: >
         The ISO 639 language code for which casing rules to use.
   example: |
-    >> "amélie".upper()
-    = "AMÉLIE"
+    assert "amélie".upper() == "AMÉLIE"
 
     # In Turkish, uppercase "i" is "İ"
-    >> "i".upper(language="tr_TR")
-    = "İ"
+    assert "i".upper(language="tr_TR") == "İ"
 
 Text.utf16:
   short: get UTF16 codepoints
@@ -942,10 +887,8 @@ Text.utf16:
       description: >
         The text from which to extract Unicode code points.
   example: |
-    >> "Åke".utf16()
-    = [197, 107, 101]
-    >> "こんにちは世界".utf16()
-    = [12371, 12435, 12395, 12385, 12399, 19990, 30028]
+    assert "Åke".utf16() == [197, 107, 101]
+    assert "こんにちは世界".utf16() == [12371, 12435, 12395, 12385, 12399, 19990, 30028]
 
 Text.utf32:
   short: get UTF32 codepoints
@@ -961,8 +904,7 @@ Text.utf32:
       description: >
         The text from which to extract Unicode code points.
   example: |
-    >> "Amélie".utf32()
-    = [65, 109, 233, 108, 105, 101]
+    assert "Amélie".utf32() == [65, 109, 233, 108, 105, 101]
 
 Text.width:
   short: get display width
@@ -983,10 +925,8 @@ Text.width:
       description: >
         The text whose length you want.
   example: |
-    >> "Amélie".width()
-    = 6
-    >> "🤠".width()
-    = 2
+    assert "Amélie".width() == 6
+    assert "🤠".width() == 2
 
 Text.without_prefix:
   short: remove prefix
@@ -1007,10 +947,8 @@ Text.without_prefix:
       description: >
         The prefix to remove.
   example: |
-    >> "foo:baz".without_prefix("foo:")
-    = "baz"
-    >> "qux".without_prefix("foo:")
-    = "qux"
+    assert "foo:baz".without_prefix("foo:") == "baz"
+    assert "qux".without_prefix("foo:") == "qux"
 
 Text.without_suffix:
   short: remove suffix
@@ -1031,8 +969,6 @@ Text.without_suffix:
       description: >
         The suffix to remove.
   example: |
-    >> "baz.foo".without_suffix(".foo")
-    = "baz"
-    >> "qux".without_suffix(".foo")
-    = "qux"
+    assert "baz.foo".without_suffix(".foo") == "baz"
+    assert "qux".without_suffix(".foo") == "qux"
 
diff --git a/man/man3/tomo-Bool.parse.3 b/man/man3/tomo-Bool.parse.3
index e1d5f3b7..8fe9f2dd 100644
--- a/man/man3/tomo-Bool.parse.3
+++ b/man/man3/tomo-Bool.parse.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Bool.parse 3 2025-08-16 "Tomo man-pages"
+.TH Bool.parse 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Bool.parse \- parse into boolean
 .SH LIBRARY
@@ -30,18 +30,12 @@ remainder	&Text?	If non-none, this argument will be set to the remainder of the
 
 .SH EXAMPLES
 .EX
->> Bool.parse("yes")
-= yes : Bool?
->> Bool.parse("no")
-= no : Bool?
->> Bool.parse("???")
-= none : Bool?
+assert Bool.parse("yes") == yes
+assert Bool.parse("no") == no
+assert Bool.parse("???") == none
 
->> Bool.parse("yesJUNK")
-= none : Bool?
+assert Bool.parse("yesJUNK") == none
 remainder : Text
->> Bool.parse("yesJUNK", &remainder)
-= yes : Bool?
->> remainder
-= "JUNK"
+assert Bool.parse("yesJUNK", &remainder) == yes
+assert remainder == "JUNK"
 .EE
diff --git a/man/man3/tomo-Byte.get_bit.3 b/man/man3/tomo-Byte.get_bit.3
index 85d6c2ae..b815e9d4 100644
--- a/man/man3/tomo-Byte.get_bit.3
+++ b/man/man3/tomo-Byte.get_bit.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Byte.get_bit 3 2025-06-26 "Tomo man-pages"
+.TH Byte.get_bit 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Byte.get_bit \- check whether a bit is set
 .SH LIBRARY
@@ -33,12 +33,8 @@ The bit index must be between 1-8 or a runtime error will be produced.
 
 .SH EXAMPLES
 .EX
->> Byte(6).get_bit(1)
-= no
->> Byte(6).get_bit(2)
-= yes
->> Byte(6).get_bit(3)
-= yes
->> Byte(6).get_bit(4)
-= no
+assert Byte(6).get_bit(1) == no
+assert Byte(6).get_bit(2) == yes
+assert Byte(6).get_bit(3) == yes
+assert Byte(6).get_bit(4) == no
 .EE
diff --git a/man/man3/tomo-Byte.hex.3 b/man/man3/tomo-Byte.hex.3
index 6b19e82c..c09ba5c1 100644
--- a/man/man3/tomo-Byte.hex.3
+++ b/man/man3/tomo-Byte.hex.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Byte.hex 3 2025-04-30 "Tomo man-pages"
+.TH Byte.hex 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Byte.hex \- convert to hexidecimal
 .SH LIBRARY
@@ -31,6 +31,5 @@ The byte as a hexidecimal text.
 
 .SH EXAMPLES
 .EX
->> Byte(18).hex()
-= "0x12"
+assert Byte(18).hex() == "0x12"
 .EE
diff --git a/man/man3/tomo-Byte.is_between.3 b/man/man3/tomo-Byte.is_between.3
index 9169d998..042747ac 100644
--- a/man/man3/tomo-Byte.is_between.3
+++ b/man/man3/tomo-Byte.is_between.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Byte.is_between 3 2025-04-30 "Tomo man-pages"
+.TH Byte.is_between 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Byte.is_between \- test if inside a range
 .SH LIBRARY
@@ -31,10 +31,7 @@ high	Byte	The upper bound to check (inclusive). 	-
 
 .SH EXAMPLES
 .EX
->> Byte(7).is_between(1, 10)
-= yes
->> Byte(7).is_between(100, 200)
-= no
->> Byte(7).is_between(1, 7)
-= yes
+assert Byte(7).is_between(1, 10) == yes
+assert Byte(7).is_between(100, 200) == no
+assert Byte(7).is_between(1, 7) == yes
 .EE
diff --git a/man/man3/tomo-Byte.parse.3 b/man/man3/tomo-Byte.parse.3
index 1beeb3a4..57dbaee2 100644
--- a/man/man3/tomo-Byte.parse.3
+++ b/man/man3/tomo-Byte.parse.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Byte.parse 3 2025-08-16 "Tomo man-pages"
+.TH Byte.parse 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Byte.parse \- convert text to a byte
 .SH LIBRARY
@@ -30,16 +30,11 @@ The byte parsed from the text, if successful, otherwise `none`.
 
 .SH EXAMPLES
 .EX
->> Byte.parse("5")
-= Byte(5) : Byte?
->> Byte.parse("asdf")
-= none : Byte?
+assert Byte.parse("5") == Byte(5)
+assert Byte.parse("asdf") == none
+assert Byte.parse("123xyz") == none
 
->> Byte.parse("123xyz")
-= none : Byte?
 remainder : Text
->> Byte.parse("123xyz", &remainder)
-= Byte(123) : Byte?
->> remainder
-= "xyz"
+assert Byte.parse("123xyz", &remainder) == Byte(123)
+assert remainder == "xyz"
 .EE
diff --git a/man/man3/tomo-Int.abs.3 b/man/man3/tomo-Int.abs.3
index 3deb6928..d5f212cd 100644
--- a/man/man3/tomo-Int.abs.3
+++ b/man/man3/tomo-Int.abs.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.abs 3 2025-04-30 "Tomo man-pages"
+.TH Int.abs 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.abs \- absolute value
 .SH LIBRARY
@@ -29,6 +29,5 @@ The absolute value of `x`.
 
 .SH EXAMPLES
 .EX
->> (-10).abs()
-= 10
+assert (-10).abs() == 10
 .EE
diff --git a/man/man3/tomo-Int.choose.3 b/man/man3/tomo-Int.choose.3
index 57a79540..5d178732 100644
--- a/man/man3/tomo-Int.choose.3
+++ b/man/man3/tomo-Int.choose.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.choose 3 2025-04-30 "Tomo man-pages"
+.TH Int.choose 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.choose \- binomial coefficient
 .SH LIBRARY
@@ -30,6 +30,5 @@ The binomial coefficient, equivalent to the number of ways to uniquely choose `k
 
 .SH EXAMPLES
 .EX
->> (4).choose(2)
-= 6
+assert (4).choose(2) == 6
 .EE
diff --git a/man/man3/tomo-Int.clamped.3 b/man/man3/tomo-Int.clamped.3
index d951f76b..fbfe9fa8 100644
--- a/man/man3/tomo-Int.clamped.3
+++ b/man/man3/tomo-Int.clamped.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.clamped 3 2025-04-30 "Tomo man-pages"
+.TH Int.clamped 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.clamped \- clamp an integer
 .SH LIBRARY
@@ -31,6 +31,5 @@ The first argument clamped between the other two arguments.
 
 .SH EXAMPLES
 .EX
->> (2).clamped(5, 10)
-= 5
+assert (2).clamped(5, 10) == 5
 .EE
diff --git a/man/man3/tomo-Int.factorial.3 b/man/man3/tomo-Int.factorial.3
index eba61613..34efbfa2 100644
--- a/man/man3/tomo-Int.factorial.3
+++ b/man/man3/tomo-Int.factorial.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.factorial 3 2025-04-30 "Tomo man-pages"
+.TH Int.factorial 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.factorial \- factorial
 .SH LIBRARY
@@ -29,6 +29,5 @@ The factorial of the given integer.
 
 .SH EXAMPLES
 .EX
->> (10).factorial()
-= 3628800
+assert (10).factorial() == 3628800
 .EE
diff --git a/man/man3/tomo-Int.get_bit.3 b/man/man3/tomo-Int.get_bit.3
index e0b98909..d2009d58 100644
--- a/man/man3/tomo-Int.get_bit.3
+++ b/man/man3/tomo-Int.get_bit.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.get_bit 3 2025-06-25 "Tomo man-pages"
+.TH Int.get_bit 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.get_bit \- check whether a bit is set
 .SH LIBRARY
@@ -33,12 +33,8 @@ For fixed-size integers, the bit index must be between 1 and the number of bits
 
 .SH EXAMPLES
 .EX
->> (6).get_bit(1)
-= no
->> (6).get_bit(2)
-= yes
->> (6).get_bit(3)
-= yes
->> (6).get_bit(4)
-= no
+assert (6).get_bit(1) == no
+assert (6).get_bit(2) == yes
+assert (6).get_bit(3) == yes
+assert (6).get_bit(4) == no
 .EE
diff --git a/man/man3/tomo-Int.hex.3 b/man/man3/tomo-Int.hex.3
index c91f22b4..fcfee9de 100644
--- a/man/man3/tomo-Int.hex.3
+++ b/man/man3/tomo-Int.hex.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.hex 3 2025-04-30 "Tomo man-pages"
+.TH Int.hex 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.hex \- convert to hexidecimal
 .SH LIBRARY
@@ -32,6 +32,5 @@ The hexadecimal string representation of the integer.
 
 .SH EXAMPLES
 .EX
->> (255).hex(digits=4, uppercase=yes, prefix=yes)
-= "0x00FF"
+assert (255).hex(digits=4, uppercase=yes, prefix=yes) == "0x00FF"
 .EE
diff --git a/man/man3/tomo-Int.is_between.3 b/man/man3/tomo-Int.is_between.3
index 1f445b12..41c84c15 100644
--- a/man/man3/tomo-Int.is_between.3
+++ b/man/man3/tomo-Int.is_between.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.is_between 3 2025-04-30 "Tomo man-pages"
+.TH Int.is_between 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.is_between \- test if an int is in a range
 .SH LIBRARY
@@ -31,10 +31,7 @@ high	Int	The upper bound to check (inclusive). 	-
 
 .SH EXAMPLES
 .EX
->> (7).is_between(1, 10)
-= yes
->> (7).is_between(100, 200)
-= no
->> (7).is_between(1, 7)
-= yes
+assert (7).is_between(1, 10) == yes
+assert (7).is_between(100, 200) == no
+assert (7).is_between(1, 7) == yes
 .EE
diff --git a/man/man3/tomo-Int.is_prime.3 b/man/man3/tomo-Int.is_prime.3
index 27769976..d5adbac8 100644
--- a/man/man3/tomo-Int.is_prime.3
+++ b/man/man3/tomo-Int.is_prime.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.is_prime 3 2025-04-30 "Tomo man-pages"
+.TH Int.is_prime 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.is_prime \- check if an integer is prime
 .SH LIBRARY
@@ -33,8 +33,6 @@ This function is _probabilistic_. With the default arguments, the chances of get
 
 .SH EXAMPLES
 .EX
->> (7).is_prime()
-= yes
->> (6).is_prime()
-= no
+assert (7).is_prime() == yes
+assert (6).is_prime() == no
 .EE
diff --git a/man/man3/tomo-Int.next_prime.3 b/man/man3/tomo-Int.next_prime.3
index 9904456a..bac4e2ed 100644
--- a/man/man3/tomo-Int.next_prime.3
+++ b/man/man3/tomo-Int.next_prime.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.next_prime 3 2025-04-30 "Tomo man-pages"
+.TH Int.next_prime 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.next_prime \- get the next prime
 .SH LIBRARY
@@ -32,6 +32,5 @@ This function is _probabilistic_, but the chances of getting an incorrect answer
 
 .SH EXAMPLES
 .EX
->> (11).next_prime()
-= 13
+assert (11).next_prime() == 13
 .EE
diff --git a/man/man3/tomo-Int.octal.3 b/man/man3/tomo-Int.octal.3
index 06c5dd23..3cd4f7f6 100644
--- a/man/man3/tomo-Int.octal.3
+++ b/man/man3/tomo-Int.octal.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.octal 3 2025-04-30 "Tomo man-pages"
+.TH Int.octal 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.octal \- convert to octal
 .SH LIBRARY
@@ -31,6 +31,5 @@ The octal string representation of the integer.
 
 .SH EXAMPLES
 .EX
->> (64).octal(digits=4, prefix=yes)
-= "0o0100"
+assert (64).octal(digits=4, prefix=yes) == "0o0100"
 .EE
diff --git a/man/man3/tomo-Int.onward.3 b/man/man3/tomo-Int.onward.3
index 17cb4a6b..2b38014b 100644
--- a/man/man3/tomo-Int.onward.3
+++ b/man/man3/tomo-Int.onward.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.onward 3 2025-04-30 "Tomo man-pages"
+.TH Int.onward 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.onward \- iterate from a number onward
 .SH LIBRARY
@@ -34,6 +34,5 @@ nums : &[Int] = &[]
 for i in (5).onward()
 nums.insert(i)
 stop if i == 10
->> nums[]
-= [5, 6, 7, 8, 9, 10]
+assert nums[] == [5, 6, 7, 8, 9, 10]
 .EE
diff --git a/man/man3/tomo-Int.parse.3 b/man/man3/tomo-Int.parse.3
index 07a00e85..16793672 100644
--- a/man/man3/tomo-Int.parse.3
+++ b/man/man3/tomo-Int.parse.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.parse 3 2025-08-16 "Tomo man-pages"
+.TH Int.parse 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.parse \- convert text to integer
 .SH LIBRARY
@@ -30,24 +30,16 @@ The integer represented by the text. If the given text contains a value outside
 
 .SH EXAMPLES
 .EX
->> Int.parse("123")
-= 123 : Int?
->> Int.parse("0xFF")
-= 255 : Int?
-
->> Int.parse("123xyz")
-= none
+assert Int.parse("123") == 123
+assert Int.parse("0xFF") == 255
+assert Int.parse("123xyz") == none
 remainder : Text
->> Int.parse("123xyz", &remainder)
-= 123 : Int?
->> remainder
-= "xyz"
+assert Int.parse("123xyz", &remainder) == 123
+assert remainder == "xyz"
 
 # Can't parse:
->> Int.parse("asdf")
-= none : Int?
+assert Int.parse("asdf") == none
 
 # Outside valid range:
->> Int8.parse("9999999")
-= none : Int8?
+assert Int8.parse("9999999") == none
 .EE
diff --git a/man/man3/tomo-Int.prev_prime.3 b/man/man3/tomo-Int.prev_prime.3
index 88cbc86a..3391de4e 100644
--- a/man/man3/tomo-Int.prev_prime.3
+++ b/man/man3/tomo-Int.prev_prime.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.prev_prime 3 2025-04-30 "Tomo man-pages"
+.TH Int.prev_prime 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.prev_prime \- get the previous prime
 .SH LIBRARY
@@ -32,6 +32,5 @@ This function is _probabilistic_, but the chances of getting an incorrect answer
 
 .SH EXAMPLES
 .EX
->> (11).prev_prime()
-= 7
+assert (11).prev_prime() == 7
 .EE
diff --git a/man/man3/tomo-Int.sqrt.3 b/man/man3/tomo-Int.sqrt.3
index 99cd53e5..a2a66a09 100644
--- a/man/man3/tomo-Int.sqrt.3
+++ b/man/man3/tomo-Int.sqrt.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.sqrt 3 2025-04-30 "Tomo man-pages"
+.TH Int.sqrt 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.sqrt \- square root
 .SH LIBRARY
@@ -29,8 +29,6 @@ The integer part of the square root of `x`.
 
 .SH EXAMPLES
 .EX
->> (16).sqrt()
-= 4
->> (17).sqrt()
-= 4
+assert (16).sqrt() == 4
+assert (17).sqrt() == 4
 .EE
diff --git a/man/man3/tomo-Int.to.3 b/man/man3/tomo-Int.to.3
index 2af4f5fd..ea8112bc 100644
--- a/man/man3/tomo-Int.to.3
+++ b/man/man3/tomo-Int.to.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Int.to 3 2025-04-30 "Tomo man-pages"
+.TH Int.to 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Int.to \- iterate a range of integers
 .SH LIBRARY
@@ -31,13 +31,14 @@ An iterator function that returns each integer in the given range (inclusive).
 
 .SH EXAMPLES
 .EX
->> (2).to(5)
-= func(->Int?)
->> [x for x in (2).to(5)]
-= [2, 3, 4, 5]
->> [x for x in (5).to(2)]
-= [5, 4, 3, 2]
+iter := (2).to(5)
+assert iter() == 2
+assert iter() == 3
+assert iter() == 4
+assert iter() == 5
+assert iter() == none
 
->> [x for x in (2).to(5, step=2)]
-= [2, 4]
+assert [x for x in (2).to(5)] == [2, 3, 4, 5]
+assert [x for x in (5).to(2)] == [5, 4, 3, 2]
+assert [x for x in (2).to(5, step=2)] == [2, 4]
 .EE
diff --git a/man/man3/tomo-List.binary_search.3 b/man/man3/tomo-List.binary_search.3
index bed89279..b2cb1759 100644
--- a/man/man3/tomo-List.binary_search.3
+++ b/man/man3/tomo-List.binary_search.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.binary_search 3 2025-04-30 "Tomo man-pages"
+.TH List.binary_search 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.binary_search \- binary search
 .SH LIBRARY
@@ -30,12 +30,7 @@ Assuming the input list is sorted according to the given comparison function, re
 
 .SH EXAMPLES
 .EX
->> [1, 3, 5, 7, 9].binary_search(5)
-= 3
-
->> [1, 3, 5, 7, 9].binary_search(-999)
-= 1
-
->> [1, 3, 5, 7, 9].binary_search(999)
-= 6
+assert [1, 3, 5, 7, 9].binary_search(5) == 3
+assert [1, 3, 5, 7, 9].binary_search(-999) == 1
+assert [1, 3, 5, 7, 9].binary_search(999) == 6
 .EE
diff --git a/man/man3/tomo-List.by.3 b/man/man3/tomo-List.by.3
index 54ac9695..4d201c43 100644
--- a/man/man3/tomo-List.by.3
+++ b/man/man3/tomo-List.by.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.by 3 2025-04-30 "Tomo man-pages"
+.TH List.by 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.by \- slice by a step value
 .SH LIBRARY
@@ -30,6 +30,5 @@ A new list with every `step`-th element from the original list.
 
 .SH EXAMPLES
 .EX
->> [1, 2, 3, 4, 5, 6].by(2)
-= [1, 3, 5]
+assert [1, 2, 3, 4, 5, 6].by(2) == [1, 3, 5]
 .EE
diff --git a/man/man3/tomo-List.counts.3 b/man/man3/tomo-List.counts.3
index 350e3044..5b6d9b1b 100644
--- a/man/man3/tomo-List.counts.3
+++ b/man/man3/tomo-List.counts.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.counts 3 2025-04-30 "Tomo man-pages"
+.TH List.counts 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.counts \- count occurrences
 .SH LIBRARY
@@ -29,6 +29,5 @@ A table mapping each element to its count.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30, 30, 30].counts()
-= {10=1, 20=1, 30=3}
+assert [10, 20, 30, 30, 30].counts() == {10=1, 20=1, 30=3}
 .EE
diff --git a/man/man3/tomo-List.find.3 b/man/man3/tomo-List.find.3
index 9a2ff609..65ae5926 100644
--- a/man/man3/tomo-List.find.3
+++ b/man/man3/tomo-List.find.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.find 3 2025-04-30 "Tomo man-pages"
+.TH List.find 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.find \- find an element's index
 .SH LIBRARY
@@ -30,9 +30,6 @@ The index of the first occurrence or `none` if not found.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30, 40, 50].find(20)
-= 2 : Int?
-
->> [10, 20, 30, 40, 50].find(9999)
-= none : Int?
+assert [10, 20, 30, 40, 50].find(20) == 2
+assert [10, 20, 30, 40, 50].find(9999) == none
 .EE
diff --git a/man/man3/tomo-List.from.3 b/man/man3/tomo-List.from.3
index e1df7793..a7a24cd6 100644
--- a/man/man3/tomo-List.from.3
+++ b/man/man3/tomo-List.from.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.from 3 2025-04-30 "Tomo man-pages"
+.TH List.from 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.from \- slice an array from a start index
 .SH LIBRARY
@@ -30,6 +30,5 @@ A new list starting from the specified index.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30, 40, 50].from(3)
-= [30, 40, 50]
+assert [10, 20, 30, 40, 50].from(3) == [30, 40, 50]
 .EE
diff --git a/man/man3/tomo-List.has.3 b/man/man3/tomo-List.has.3
index 7b46066b..96507253 100644
--- a/man/man3/tomo-List.has.3
+++ b/man/man3/tomo-List.has.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.has 3 2025-04-30 "Tomo man-pages"
+.TH List.has 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.has \- check for member
 .SH LIBRARY
@@ -30,6 +30,5 @@ target	T	The element to check for. 	-
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30].has(20)
-= yes
+assert [10, 20, 30].has(20) == yes
 .EE
diff --git a/man/man3/tomo-List.heap_pop.3 b/man/man3/tomo-List.heap_pop.3
index 00527870..cd4e292a 100644
--- a/man/man3/tomo-List.heap_pop.3
+++ b/man/man3/tomo-List.heap_pop.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.heap_pop 3 2025-04-30 "Tomo man-pages"
+.TH List.heap_pop 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.heap_pop \- heap pop
 .SH LIBRARY
@@ -30,8 +30,7 @@ The removed top element of the heap or `none` if the list is empty.
 
 .SH EXAMPLES
 .EX
->> my_heap := [30, 10, 20]
->> my_heap.heapify()
->> my_heap.heap_pop()
-= 10
+my_heap := [30, 10, 20]
+my_heap.heapify()
+assert my_heap.heap_pop() == 10
 .EE
diff --git a/man/man3/tomo-List.insert.3 b/man/man3/tomo-List.insert.3
index 20d23ef2..0ab71a3f 100644
--- a/man/man3/tomo-List.insert.3
+++ b/man/man3/tomo-List.insert.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.insert 3 2025-04-30 "Tomo man-pages"
+.TH List.insert 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.insert \- add an item to a list
 .SH LIBRARY
@@ -34,12 +34,10 @@ Since indices are 1-indexed and negative indices mean "starting from the back",
 
 .SH EXAMPLES
 .EX
->> list := [10, 20]
->> list.insert(30)
->> list
-= [10, 20, 30]
+list := [10, 20]
+list.insert(30)
+assert list == [10, 20, 30]
 
->> list.insert(999, at=2)
->> list
-= [10, 999, 20, 30]
+list.insert(999, at=2)
+assert list == [10, 999, 20, 30]
 .EE
diff --git a/man/man3/tomo-List.insert_all.3 b/man/man3/tomo-List.insert_all.3
index bd042209..795f4a2d 100644
--- a/man/man3/tomo-List.insert_all.3
+++ b/man/man3/tomo-List.insert_all.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.insert_all 3 2025-04-30 "Tomo man-pages"
+.TH List.insert_all 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.insert_all \- add multiple items to a list
 .SH LIBRARY
@@ -36,10 +36,8 @@ Since indices are 1-indexed and negative indices mean "starting from the back",
 .EX
 list := [10, 20]
 list.insert_all([30, 40])
->> list
-= [10, 20, 30, 40]
+assert list == [10, 20, 30, 40]
 
 list.insert_all([99, 100], at=2)
->> list
-= [10, 99, 100, 20, 30, 40]
+assert list == [10, 99, 100, 20, 30, 40]
 .EE
diff --git a/man/man3/tomo-List.pop.3 b/man/man3/tomo-List.pop.3
index 1603d9b7..b157e0ac 100644
--- a/man/man3/tomo-List.pop.3
+++ b/man/man3/tomo-List.pop.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.pop 3 2025-04-30 "Tomo man-pages"
+.TH List.pop 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.pop \- pop an item from a list
 .SH LIBRARY
@@ -33,15 +33,11 @@ Since negative indices are counted from the back, the default behavior is to pop
 
 .SH EXAMPLES
 .EX
->> list := [10, 20, 30, 40]
+list := &[10, 20, 30, 40]
 
->> list.pop()
-= 40
->> list
-= &[10, 20, 30]
+assert list.pop() == 40
+assert list[] == [10, 20, 30]
 
->> list.pop(index=2)
-= 20
->> list
-= &[10, 30]
+assert list.pop(index=2) == 20
+assert list[] == [10, 30]
 .EE
diff --git a/man/man3/tomo-List.random.3 b/man/man3/tomo-List.random.3
index 60713098..0c82bfd0 100644
--- a/man/man3/tomo-List.random.3
+++ b/man/man3/tomo-List.random.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.random 3 2025-04-30 "Tomo man-pages"
+.TH List.random 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.random \- pick a random element
 .SH LIBRARY
@@ -30,6 +30,5 @@ A random element from the list.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30].random()
-= 20
+assert [10, 20, 30].random() == 20
 .EE
diff --git a/man/man3/tomo-List.remove_at.3 b/man/man3/tomo-List.remove_at.3
index 0ff876c9..8e993931 100644
--- a/man/man3/tomo-List.remove_at.3
+++ b/man/man3/tomo-List.remove_at.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.remove_at 3 2025-04-30 "Tomo man-pages"
+.TH List.remove_at 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.remove_at \- remove an item by index
 .SH LIBRARY
@@ -36,10 +36,8 @@ Since negative indices are counted from the back, the default behavior is to rem
 .EX
 list := [10, 20, 30, 40, 50]
 list.remove_at(2)
->> list
-= [10, 30, 40, 50]
+assert list == [10, 30, 40, 50]
 
 list.remove_at(2, count=2)
->> list
-= [10, 50]
+assert list == [10, 50]
 .EE
diff --git a/man/man3/tomo-List.remove_item.3 b/man/man3/tomo-List.remove_item.3
index 24531400..02631ba6 100644
--- a/man/man3/tomo-List.remove_item.3
+++ b/man/man3/tomo-List.remove_item.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.remove_item 3 2025-04-30 "Tomo man-pages"
+.TH List.remove_item 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.remove_item \- remove an item by value
 .SH LIBRARY
@@ -36,10 +36,8 @@ A negative `max_count` means "remove all occurrences".
 .EX
 list := [10, 20, 10, 20, 30]
 list.remove_item(10)
->> list
-= [20, 20, 30]
+assert list == [20, 20, 30]
 
 list.remove_item(20, max_count=1)
->> list
-= [20, 30]
+assert list == [20, 30]
 .EE
diff --git a/man/man3/tomo-List.reversed.3 b/man/man3/tomo-List.reversed.3
index c0073391..2b84e333 100644
--- a/man/man3/tomo-List.reversed.3
+++ b/man/man3/tomo-List.reversed.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.reversed 3 2025-04-30 "Tomo man-pages"
+.TH List.reversed 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.reversed \- get a reversed list
 .SH LIBRARY
@@ -29,6 +29,5 @@ A slice of the list with elements in reverse order.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30].reversed()
-= [30, 20, 10]
+assert [10, 20, 30].reversed() == [30, 20, 10]
 .EE
diff --git a/man/man3/tomo-List.sample.3 b/man/man3/tomo-List.sample.3
index 538310f9..0e4d779c 100644
--- a/man/man3/tomo-List.sample.3
+++ b/man/man3/tomo-List.sample.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.sample 3 2025-04-30 "Tomo man-pages"
+.TH List.sample 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.sample \- weighted random choices
 .SH LIBRARY
@@ -35,6 +35,5 @@ Errors will be raised if any of the following conditions occurs: - The given lis
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30].sample(2, weights=[90%, 5%, 5%])
-= [10, 10]
+assert [10, 20, 30].sample(2, weights=[90%, 5%, 5%]) == [10, 10]
 .EE
diff --git a/man/man3/tomo-List.shuffled.3 b/man/man3/tomo-List.shuffled.3
index 6585cc0f..25e63154 100644
--- a/man/man3/tomo-List.shuffled.3
+++ b/man/man3/tomo-List.shuffled.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.shuffled 3 2025-04-30 "Tomo man-pages"
+.TH List.shuffled 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.shuffled \- return a shuffled list
 .SH LIBRARY
@@ -30,6 +30,5 @@ A new list with shuffled elements.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30, 40].shuffled()
-= [40, 10, 30, 20]
+assert [10, 20, 30, 40].shuffled() == [40, 10, 30, 20]
 .EE
diff --git a/man/man3/tomo-List.slice.3 b/man/man3/tomo-List.slice.3
index 73dddbc3..676e2a08 100644
--- a/man/man3/tomo-List.slice.3
+++ b/man/man3/tomo-List.slice.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.slice 3 2025-04-30 "Tomo man-pages"
+.TH List.slice 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.slice \- get a slice of a list
 .SH LIBRARY
@@ -31,9 +31,6 @@ A new list spanning the given indices. Note: negative indices are counted from t
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30, 40, 50].slice(2, 4)
-= [20, 30, 40]
-
->> [10, 20, 30, 40, 50].slice(-3, -2)
-= [30, 40]
+assert [10, 20, 30, 40, 50].slice(2, 4) == [20, 30, 40]
+assert [10, 20, 30, 40, 50].slice(-3, -2) == [30, 40]
 .EE
diff --git a/man/man3/tomo-List.sort.3 b/man/man3/tomo-List.sort.3
index 62b05b37..3957e9fe 100644
--- a/man/man3/tomo-List.sort.3
+++ b/man/man3/tomo-List.sort.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.sort 3 2025-04-30 "Tomo man-pages"
+.TH List.sort 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.sort \- sort a list
 .SH LIBRARY
@@ -32,10 +32,8 @@ Nothing.
 .EX
 list := [40, 10, -30, 20]
 list.sort()
->> list
-= [-30, 10, 20, 40]
+assert list == [-30, 10, 20, 40]
 
 list.sort(func(a,b:&Int): a.abs() <> b.abs())
->> list
-= [10, 20, -30, 40]
+assert list == [10, 20, -30, 40]
 .EE
diff --git a/man/man3/tomo-List.sorted.3 b/man/man3/tomo-List.sorted.3
index 19277682..49d75ecd 100644
--- a/man/man3/tomo-List.sorted.3
+++ b/man/man3/tomo-List.sorted.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.sorted 3 2025-04-30 "Tomo man-pages"
+.TH List.sorted 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.sorted \- sorted copy of a list
 .SH LIBRARY
@@ -30,9 +30,8 @@ A new list with sorted elements.
 
 .SH EXAMPLES
 .EX
->> [40, 10, -30, 20].sorted()
-= [-30, 10, 20, 40]
-
->> [40, 10, -30, 20].sorted(func(a,b:&Int): a.abs() <> b.abs())
-= [10, 20, -30, 40]
+assert [40, 10, -30, 20].sorted() == [-30, 10, 20, 40]
+assert [40, 10, -30, 20].sorted(
+   func(a,b:&Int): a.abs() <> b.abs()
+) == [10, 20, -30, 40]
 .EE
diff --git a/man/man3/tomo-List.to.3 b/man/man3/tomo-List.to.3
index 202ec0c7..5af2a6db 100644
--- a/man/man3/tomo-List.to.3
+++ b/man/man3/tomo-List.to.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.to 3 2025-04-30 "Tomo man-pages"
+.TH List.to 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.to \- slice a list to an end index
 .SH LIBRARY
@@ -30,9 +30,6 @@ A new list containing elements from the start up to the specified index.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 30, 40, 50].to(3)
-= [10, 20, 30]
-
->> [10, 20, 30, 40, 50].to(-2)
-= [10, 20, 30, 40]
+assert [10, 20, 30, 40, 50].to(3) == [10, 20, 30]
+assert [10, 20, 30, 40, 50].to(-2) == [10, 20, 30, 40]
 .EE
diff --git a/man/man3/tomo-List.unique.3 b/man/man3/tomo-List.unique.3
index e24c0ad6..cab945b8 100644
--- a/man/man3/tomo-List.unique.3
+++ b/man/man3/tomo-List.unique.3
@@ -2,17 +2,17 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.unique 3 2025-04-30 "Tomo man-pages"
+.TH List.unique 3 2025-09-21 "Tomo man-pages"
 .SH NAME
-List.unique \- convert a list to a set
+List.unique \- get the unique items in a list
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI List.unique\ :\ func(list:\ [T]\ ->\ |T|)
+.BI List.unique\ :\ func(list:\ [T]\ ->\ [T])
 .fi
 .SH DESCRIPTION
-Returns a Set that contains the unique elements of the list.
+Returns a list of the unique elements of the list.
 
 
 .SH ARGUMENTS
@@ -25,10 +25,9 @@ Name	Type	Description	Default
 list	[T]	The list to process. 	-
 .TE
 .SH RETURN
-A set containing only unique elements from the list.
+A list of the unique elements from the list.
 
 .SH EXAMPLES
 .EX
->> [10, 20, 10, 10, 30].unique()
-= {10, 20, 30}
+assert [10, 20, 10, 10, 30].unique() == [10, 20, 30]
 .EE
diff --git a/man/man3/tomo-List.where.3 b/man/man3/tomo-List.where.3
index 8e0d50de..8d5c71ef 100644
--- a/man/man3/tomo-List.where.3
+++ b/man/man3/tomo-List.where.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH List.where 3 2025-04-30 "Tomo man-pages"
+.TH List.where 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 List.where \- find an index where a predicate matches
 .SH LIBRARY
@@ -30,8 +30,6 @@ Returns the index of the first item where the predicate is true or `none` if no
 
 .SH EXAMPLES
 .EX
->> [4, 5, 6].where(func(i:&Int): i.is_prime())
-= 5 : Int?
->> [4, 6, 8].find(func(i:&Int): i.is_prime())
-= none : Int?
+assert [4, 5, 6].where(func(i:&Int): i.is_prime()) == 5
+assert [4, 6, 8].find(func(i:&Int): i.is_prime()) == none
 .EE
diff --git a/man/man3/tomo-Num.abs.3 b/man/man3/tomo-Num.abs.3
index c1f1bf31..425d43cb 100644
--- a/man/man3/tomo-Num.abs.3
+++ b/man/man3/tomo-Num.abs.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.abs 3 2025-04-30 "Tomo man-pages"
+.TH Num.abs 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.abs \- absolute value
 .SH LIBRARY
@@ -29,6 +29,5 @@ The absolute value of `n`.
 
 .SH EXAMPLES
 .EX
->> (-3.5).abs()
-= 3.5
+assert (-3.5).abs() == 3.5
 .EE
diff --git a/man/man3/tomo-Num.acos.3 b/man/man3/tomo-Num.acos.3
index 78715179..819c43d3 100644
--- a/man/man3/tomo-Num.acos.3
+++ b/man/man3/tomo-Num.acos.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.acos 3 2025-04-30 "Tomo man-pages"
+.TH Num.acos 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.acos \- arc cosine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The arc cosine of `x` in radians.
 
 .SH EXAMPLES
 .EX
->> (0.0).acos() // -> (π/2)
-= 1.5708
+assert (0.0).acos() == 1.5708
 .EE
diff --git a/man/man3/tomo-Num.acosh.3 b/man/man3/tomo-Num.acosh.3
index c971dc0d..0899fff8 100644
--- a/man/man3/tomo-Num.acosh.3
+++ b/man/man3/tomo-Num.acosh.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.acosh 3 2025-04-30 "Tomo man-pages"
+.TH Num.acosh 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.acosh \- arc hyperbolic cosine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The inverse hyperbolic cosine of `x`.
 
 .SH EXAMPLES
 .EX
->> (1.0).acosh()
-= 0
+assert (1.0).acosh() == 0
 .EE
diff --git a/man/man3/tomo-Num.asin.3 b/man/man3/tomo-Num.asin.3
index 242dbe0b..529a974c 100644
--- a/man/man3/tomo-Num.asin.3
+++ b/man/man3/tomo-Num.asin.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.asin 3 2025-04-30 "Tomo man-pages"
+.TH Num.asin 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.asin \- arc sine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The arc sine of `x` in radians.
 
 .SH EXAMPLES
 .EX
->> (0.5).asin()  // -> (π/6)
-= 0.5236
+assert (0.5).asin() == 0.5236
 .EE
diff --git a/man/man3/tomo-Num.asinh.3 b/man/man3/tomo-Num.asinh.3
index ed437b24..da88b719 100644
--- a/man/man3/tomo-Num.asinh.3
+++ b/man/man3/tomo-Num.asinh.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.asinh 3 2025-04-30 "Tomo man-pages"
+.TH Num.asinh 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.asinh \- arc hyperbolic sine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The inverse hyperbolic sine of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).asinh()
-= 0
+assert (0.0).asinh() == 0
 .EE
diff --git a/man/man3/tomo-Num.atan.3 b/man/man3/tomo-Num.atan.3
index 116c70de..808338d4 100644
--- a/man/man3/tomo-Num.atan.3
+++ b/man/man3/tomo-Num.atan.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.atan 3 2025-04-30 "Tomo man-pages"
+.TH Num.atan 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.atan \- arc tangent
 .SH LIBRARY
@@ -29,6 +29,5 @@ The arc tangent of `x` in radians.
 
 .SH EXAMPLES
 .EX
->> (1.0).atan() // -> (π/4)
-= 0.7854
+assert (1.0).atan() == 0.7854
 .EE
diff --git a/man/man3/tomo-Num.atan2.3 b/man/man3/tomo-Num.atan2.3
index 601047a1..ee2400aa 100644
--- a/man/man3/tomo-Num.atan2.3
+++ b/man/man3/tomo-Num.atan2.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.atan2 3 2025-04-30 "Tomo man-pages"
+.TH Num.atan2 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.atan2 \- arc tangent from 2 variables
 .SH LIBRARY
@@ -30,6 +30,5 @@ The arc tangent of `x/y` in radians.
 
 .SH EXAMPLES
 .EX
->> Num.atan2(1, 1) // -> (π/4)
-= 0.7854
+assert Num.atan2(1, 1) == 0.7854
 .EE
diff --git a/man/man3/tomo-Num.atanh.3 b/man/man3/tomo-Num.atanh.3
index 43bfcc77..c7c30692 100644
--- a/man/man3/tomo-Num.atanh.3
+++ b/man/man3/tomo-Num.atanh.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.atanh 3 2025-04-30 "Tomo man-pages"
+.TH Num.atanh 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.atanh \- arc hyperbolic tangent.
 .SH LIBRARY
@@ -29,6 +29,5 @@ The inverse hyperbolic tangent of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.5).atanh()
-= 0.5493
+assert (0.5).atanh() == 0.5493
 .EE
diff --git a/man/man3/tomo-Num.cbrt.3 b/man/man3/tomo-Num.cbrt.3
index b74d2a15..15e0ee9e 100644
--- a/man/man3/tomo-Num.cbrt.3
+++ b/man/man3/tomo-Num.cbrt.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.cbrt 3 2025-04-30 "Tomo man-pages"
+.TH Num.cbrt 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.cbrt \- cube root
 .SH LIBRARY
@@ -29,6 +29,5 @@ The cube root of `x`.
 
 .SH EXAMPLES
 .EX
->> (27.0).cbrt()
-= 3
+assert (27.0).cbrt() == 3
 .EE
diff --git a/man/man3/tomo-Num.ceil.3 b/man/man3/tomo-Num.ceil.3
index 639d7c3d..c0aac8a9 100644
--- a/man/man3/tomo-Num.ceil.3
+++ b/man/man3/tomo-Num.ceil.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.ceil 3 2025-04-30 "Tomo man-pages"
+.TH Num.ceil 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.ceil \- ceiling function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The smallest integer greater than or equal to `x`.
 
 .SH EXAMPLES
 .EX
->> (3.2).ceil()
-= 4
+assert (3.2).ceil() == 4
 .EE
diff --git a/man/man3/tomo-Num.clamped.3 b/man/man3/tomo-Num.clamped.3
index 01037d44..3ed48344 100644
--- a/man/man3/tomo-Num.clamped.3
+++ b/man/man3/tomo-Num.clamped.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.clamped 3 2025-04-30 "Tomo man-pages"
+.TH Num.clamped 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.clamped \- clamp a number
 .SH LIBRARY
@@ -31,6 +31,5 @@ The first argument clamped between the other two arguments.
 
 .SH EXAMPLES
 .EX
->> (2.5).clamped(5.5, 10.5)
-= 5.5
+assert (2.5).clamped(5.5, 10.5) == 5.5
 .EE
diff --git a/man/man3/tomo-Num.copysign.3 b/man/man3/tomo-Num.copysign.3
index 1fd4d898..9230754c 100644
--- a/man/man3/tomo-Num.copysign.3
+++ b/man/man3/tomo-Num.copysign.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.copysign 3 2025-04-30 "Tomo man-pages"
+.TH Num.copysign 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.copysign \- copy a number's sign
 .SH LIBRARY
@@ -30,6 +30,5 @@ A number with the magnitude of `x` and the sign of `y`.
 
 .SH EXAMPLES
 .EX
->> (3.0).copysign(-1)
-= -3
+assert (3.0).copysign(-1) == -3
 .EE
diff --git a/man/man3/tomo-Num.cos.3 b/man/man3/tomo-Num.cos.3
index ed1df601..6071c022 100644
--- a/man/man3/tomo-Num.cos.3
+++ b/man/man3/tomo-Num.cos.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.cos 3 2025-04-30 "Tomo man-pages"
+.TH Num.cos 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.cos \- cosine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The cosine of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).cos()
-= 1
+assert (0.0).cos() == 1
 .EE
diff --git a/man/man3/tomo-Num.cosh.3 b/man/man3/tomo-Num.cosh.3
index 59ec417d..843ec369 100644
--- a/man/man3/tomo-Num.cosh.3
+++ b/man/man3/tomo-Num.cosh.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.cosh 3 2025-04-30 "Tomo man-pages"
+.TH Num.cosh 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.cosh \- hyperbolic cosine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The hyperbolic cosine of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).cosh()
-= 1
+assert (0.0).cosh() == 1
 .EE
diff --git a/man/man3/tomo-Num.erf.3 b/man/man3/tomo-Num.erf.3
index 5f1a56f9..aec6194f 100644
--- a/man/man3/tomo-Num.erf.3
+++ b/man/man3/tomo-Num.erf.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.erf 3 2025-04-30 "Tomo man-pages"
+.TH Num.erf 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.erf \- error function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The error function of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).erf()
-= 0
+assert (0.0).erf() == 0
 .EE
diff --git a/man/man3/tomo-Num.erfc.3 b/man/man3/tomo-Num.erfc.3
index cf0bcad7..27dcb44a 100644
--- a/man/man3/tomo-Num.erfc.3
+++ b/man/man3/tomo-Num.erfc.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.erfc 3 2025-04-30 "Tomo man-pages"
+.TH Num.erfc 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.erfc \- complimentary error function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The complementary error function of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).erfc()
-= 1
+assert (0.0).erfc() == 1
 .EE
diff --git a/man/man3/tomo-Num.exp.3 b/man/man3/tomo-Num.exp.3
index e4ac0608..4778a76d 100644
--- a/man/man3/tomo-Num.exp.3
+++ b/man/man3/tomo-Num.exp.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.exp 3 2025-04-30 "Tomo man-pages"
+.TH Num.exp 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.exp \- base-e exponentiation
 .SH LIBRARY
@@ -29,6 +29,5 @@ The value of $e^x$.
 
 .SH EXAMPLES
 .EX
->> (1.0).exp()
-= 2.7183
+assert (1.0).exp() == 2.7183
 .EE
diff --git a/man/man3/tomo-Num.exp2.3 b/man/man3/tomo-Num.exp2.3
index 4ac3e868..1d997802 100644
--- a/man/man3/tomo-Num.exp2.3
+++ b/man/man3/tomo-Num.exp2.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.exp2 3 2025-04-30 "Tomo man-pages"
+.TH Num.exp2 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.exp2 \- base-2 exponentiation
 .SH LIBRARY
@@ -29,6 +29,5 @@ The value of $2^x$.
 
 .SH EXAMPLES
 .EX
->> (3.0).exp2()
-= 8
+assert (3.0).exp2() == 8
 .EE
diff --git a/man/man3/tomo-Num.expm1.3 b/man/man3/tomo-Num.expm1.3
index abec8bf1..956bb3ac 100644
--- a/man/man3/tomo-Num.expm1.3
+++ b/man/man3/tomo-Num.expm1.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.expm1 3 2025-04-30 "Tomo man-pages"
+.TH Num.expm1 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.expm1 \- base-e exponential minus 1
 .SH LIBRARY
@@ -29,6 +29,5 @@ The value of $e^x - 1$.
 
 .SH EXAMPLES
 .EX
->> (1.0).expm1()
-= 1.7183
+assert (1.0).expm1() == 1.7183
 .EE
diff --git a/man/man3/tomo-Num.fdim.3 b/man/man3/tomo-Num.fdim.3
index 32ece8ba..2498fc7b 100644
--- a/man/man3/tomo-Num.fdim.3
+++ b/man/man3/tomo-Num.fdim.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.fdim 3 2025-04-30 "Tomo man-pages"
+.TH Num.fdim 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.fdim \- positive difference
 .SH LIBRARY
@@ -32,6 +32,5 @@ The positive difference $\max(0, x - y)$.
 .EX
 fd
 
->> (5.0).fdim(3)
-= 2
+assert (5.0).fdim(3) == 2
 .EE
diff --git a/man/man3/tomo-Num.floor.3 b/man/man3/tomo-Num.floor.3
index 63118259..2107a1f0 100644
--- a/man/man3/tomo-Num.floor.3
+++ b/man/man3/tomo-Num.floor.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.floor 3 2025-04-30 "Tomo man-pages"
+.TH Num.floor 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.floor \- floor function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The largest integer less than or equal to `x`.
 
 .SH EXAMPLES
 .EX
->> (3.7).floor()
-= 3
+assert (3.7).floor() == 3
 .EE
diff --git a/man/man3/tomo-Num.hypot.3 b/man/man3/tomo-Num.hypot.3
index c640236f..3c2e0913 100644
--- a/man/man3/tomo-Num.hypot.3
+++ b/man/man3/tomo-Num.hypot.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.hypot 3 2025-04-30 "Tomo man-pages"
+.TH Num.hypot 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.hypot \- Euclidean distance function
 .SH LIBRARY
@@ -30,6 +30,5 @@ The Euclidean norm of `x` and `y`.
 
 .SH EXAMPLES
 .EX
->> Num.hypot(3, 4)
-= 5
+assert Num.hypot(3, 4) == 5
 .EE
diff --git a/man/man3/tomo-Num.is_between.3 b/man/man3/tomo-Num.is_between.3
index ae08f92a..7077b397 100644
--- a/man/man3/tomo-Num.is_between.3
+++ b/man/man3/tomo-Num.is_between.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.is_between 3 2025-04-30 "Tomo man-pages"
+.TH Num.is_between 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.is_between \- check if a number is in a range
 .SH LIBRARY
@@ -31,10 +31,7 @@ high	Num	The upper bound to check (inclusive). 	-
 
 .SH EXAMPLES
 .EX
->> (7.5).is_between(1, 10)
-= yes
->> (7.5).is_between(100, 200)
-= no
->> (7.5).is_between(1, 7.5)
-= yes
+assert (7.5).is_between(1, 10) == yes
+assert (7.5).is_between(100, 200) == no
+assert (7.5).is_between(1, 7.5) == yes
 .EE
diff --git a/man/man3/tomo-Num.isfinite.3 b/man/man3/tomo-Num.isfinite.3
index 24a925ab..99fdd913 100644
--- a/man/man3/tomo-Num.isfinite.3
+++ b/man/man3/tomo-Num.isfinite.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.isfinite 3 2025-04-30 "Tomo man-pages"
+.TH Num.isfinite 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.isfinite \- check for finite number
 .SH LIBRARY
@@ -29,8 +29,6 @@ n	Num	The number to be checked. 	-
 
 .SH EXAMPLES
 .EX
->> (1.0).isfinite()
-= yes
->> Num.INF.isfinite()
-= no
+assert (1.0).isfinite() == yes
+assert Num.INF.isfinite() == no
 .EE
diff --git a/man/man3/tomo-Num.isinf.3 b/man/man3/tomo-Num.isinf.3
index 9e0be863..f8587d7a 100644
--- a/man/man3/tomo-Num.isinf.3
+++ b/man/man3/tomo-Num.isinf.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.isinf 3 2025-04-30 "Tomo man-pages"
+.TH Num.isinf 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.isinf \- check for infinite number
 .SH LIBRARY
@@ -29,8 +29,6 @@ n	Num	The number to be checked. 	-
 
 .SH EXAMPLES
 .EX
->> Num.INF.isinf()
-= yes
->> (1.0).isinf()
-= no
+assert Num.INF.isinf() == yes
+assert (1.0).isinf() == no
 .EE
diff --git a/man/man3/tomo-Num.j0.3 b/man/man3/tomo-Num.j0.3
index f2d7e0cb..1ad0ed38 100644
--- a/man/man3/tomo-Num.j0.3
+++ b/man/man3/tomo-Num.j0.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.j0 3 2025-04-30 "Tomo man-pages"
+.TH Num.j0 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.j0 \- Bessel function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The Bessel function of the first kind of order 0 of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).j0()
-= 1
+assert (0.0).j0() == 1
 .EE
diff --git a/man/man3/tomo-Num.j1.3 b/man/man3/tomo-Num.j1.3
index 65d59793..7f3fda5a 100644
--- a/man/man3/tomo-Num.j1.3
+++ b/man/man3/tomo-Num.j1.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.j1 3 2025-04-30 "Tomo man-pages"
+.TH Num.j1 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.j1 \- Bessel function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The Bessel function of the first kind of order 1 of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).j1()
-= 0
+assert (0.0).j1() == 0
 .EE
diff --git a/man/man3/tomo-Num.log.3 b/man/man3/tomo-Num.log.3
index de0a2d5c..5cfd660c 100644
--- a/man/man3/tomo-Num.log.3
+++ b/man/man3/tomo-Num.log.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.log 3 2025-04-30 "Tomo man-pages"
+.TH Num.log 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.log \- natural logarithm
 .SH LIBRARY
@@ -29,6 +29,5 @@ The natural logarithm of `x`.
 
 .SH EXAMPLES
 .EX
->> Num.E.log()
-= 1
+assert Num.E.log() == 1
 .EE
diff --git a/man/man3/tomo-Num.log10.3 b/man/man3/tomo-Num.log10.3
index 24682774..87000cb9 100644
--- a/man/man3/tomo-Num.log10.3
+++ b/man/man3/tomo-Num.log10.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.log10 3 2025-04-30 "Tomo man-pages"
+.TH Num.log10 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.log10 \- logarithm base-10
 .SH LIBRARY
@@ -29,6 +29,5 @@ The base-10 logarithm of `x`.
 
 .SH EXAMPLES
 .EX
->> (100.0).log10()
-= 2
+assert (100.0).log10() == 2
 .EE
diff --git a/man/man3/tomo-Num.log1p.3 b/man/man3/tomo-Num.log1p.3
index 0fb715d7..dcf4a253 100644
--- a/man/man3/tomo-Num.log1p.3
+++ b/man/man3/tomo-Num.log1p.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.log1p 3 2025-04-30 "Tomo man-pages"
+.TH Num.log1p 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.log1p \- logarithm of 1 plus x
 .SH LIBRARY
@@ -29,6 +29,5 @@ The value of $\log(1 + x)$.
 
 .SH EXAMPLES
 .EX
->> (1.0).log1p()
-= 0.6931
+assert (1.0).log1p() == 0.6931
 .EE
diff --git a/man/man3/tomo-Num.log2.3 b/man/man3/tomo-Num.log2.3
index 68820181..3e162d15 100644
--- a/man/man3/tomo-Num.log2.3
+++ b/man/man3/tomo-Num.log2.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.log2 3 2025-04-30 "Tomo man-pages"
+.TH Num.log2 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.log2 \- logarithm base-2
 .SH LIBRARY
@@ -29,6 +29,5 @@ The base-2 logarithm of `x`.
 
 .SH EXAMPLES
 .EX
->> (8.0).log2()
-= 3
+assert (8.0).log2() == 3
 .EE
diff --git a/man/man3/tomo-Num.logb.3 b/man/man3/tomo-Num.logb.3
index f7de8d87..519e6042 100644
--- a/man/man3/tomo-Num.logb.3
+++ b/man/man3/tomo-Num.logb.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.logb 3 2025-04-30 "Tomo man-pages"
+.TH Num.logb 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.logb \- exponent of a floating point value
 .SH LIBRARY
@@ -29,6 +29,5 @@ The binary exponent of `x`.
 
 .SH EXAMPLES
 .EX
->> (8.0).logb()
-= 3
+assert (8.0).logb() == 3
 .EE
diff --git a/man/man3/tomo-Num.mix.3 b/man/man3/tomo-Num.mix.3
index a3a06b96..f06462eb 100644
--- a/man/man3/tomo-Num.mix.3
+++ b/man/man3/tomo-Num.mix.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.mix 3 2025-04-30 "Tomo man-pages"
+.TH Num.mix 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.mix \- mix two numbers by an amount
 .SH LIBRARY
@@ -31,8 +31,6 @@ The interpolated number between `x` and `y` based on `amount`.
 
 .SH EXAMPLES
 .EX
->> (0.5).mix(10, 20)
-= 15
->> (0.25).mix(10, 20)
-= 12.5
+assert (0.5).mix(10, 20) == 15
+assert (0.25).mix(10, 20) == 12.5
 .EE
diff --git a/man/man3/tomo-Num.near.3 b/man/man3/tomo-Num.near.3
index 58ec4989..ef1b80ce 100644
--- a/man/man3/tomo-Num.near.3
+++ b/man/man3/tomo-Num.near.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.near 3 2025-04-30 "Tomo man-pages"
+.TH Num.near 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.near \- check if two numbers are near each other
 .SH LIBRARY
@@ -32,12 +32,7 @@ min_epsilon	Num	The absolute tolerance. Default is `1e-9`. 	1e-9
 
 .SH EXAMPLES
 .EX
->> (1.0).near(1.000000001)
-= yes
-
->> (100.0).near(110, ratio=0.1)
-= yes
-
->> (5.0).near(5.1, min_epsilon=0.1)
-= yes
+assert (1.0).near(1.000000001) == yes
+assert (100.0).near(110, ratio=0.1) == yes
+assert (5.0).near(5.1, min_epsilon=0.1) == yes
 .EE
diff --git a/man/man3/tomo-Num.nextafter.3 b/man/man3/tomo-Num.nextafter.3
index b5b69948..1cc51818 100644
--- a/man/man3/tomo-Num.nextafter.3
+++ b/man/man3/tomo-Num.nextafter.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.nextafter 3 2025-04-30 "Tomo man-pages"
+.TH Num.nextafter 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.nextafter \- next floating point number
 .SH LIBRARY
@@ -30,6 +30,5 @@ The next representable value after `x` in the direction of `y`.
 
 .SH EXAMPLES
 .EX
->> (1.0).nextafter(1.1)
-= 1.0000000000000002
+assert (1.0).nextafter(1.1) == 1.0000000000000002
 .EE
diff --git a/man/man3/tomo-Num.parse.3 b/man/man3/tomo-Num.parse.3
index 63165e59..d224e4e8 100644
--- a/man/man3/tomo-Num.parse.3
+++ b/man/man3/tomo-Num.parse.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.parse 3 2025-08-16 "Tomo man-pages"
+.TH Num.parse 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.parse \- convert text to number
 .SH LIBRARY
@@ -30,16 +30,10 @@ The number represented by the text or `none` if the entire text can't be parsed
 
 .SH EXAMPLES
 .EX
->> Num.parse("3.14")
-= 3.14 : Num?
->> Num.parse("1e3")
-= 1000 : Num?
-
->> Num.parse("1.5junk")
-= none : Num?
+assert Num.parse("3.14") == 3.14
+assert Num.parse("1e3") == 1000
+assert Num.parse("1.5junk") == none
 remainder : Text
->> Num.parse("1.5junk", &remainder)
-= 1.5 : Num?
->> remainder
-= "junk"
+assert Num.parse("1.5junk", &remainder) == 1.5
+assert remainder == "junk"
 .EE
diff --git a/man/man3/tomo-Num.percent.3 b/man/man3/tomo-Num.percent.3
index 82b9f6b4..5c41845e 100644
--- a/man/man3/tomo-Num.percent.3
+++ b/man/man3/tomo-Num.percent.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.percent 3 2025-04-30 "Tomo man-pages"
+.TH Num.percent 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.percent \- format as a percentage
 .SH LIBRARY
@@ -30,12 +30,8 @@ A text representation of the number as a percentage with a percent sign.
 
 .SH EXAMPLES
 .EX
->> (0.5).percent()
-= "50%"
->> (1./3.).percent(2)
-= "33.33%"
->> (1./3.).percent(2, precision=0.0001)
-= "33.3333%"
->> (1./3.).percent(2, precision=10.)
-= "30%"
+assert (0.5).percent() == "50%"
+assert (1./3.).percent(2) == "33.33%"
+assert (1./3.).percent(2, precision=0.0001) == "33.3333%"
+assert (1./3.).percent(2, precision=10.) == "30%"
 .EE
diff --git a/man/man3/tomo-Num.rint.3 b/man/man3/tomo-Num.rint.3
index 3a021eb1..ca1f9bfa 100644
--- a/man/man3/tomo-Num.rint.3
+++ b/man/man3/tomo-Num.rint.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.rint 3 2025-04-30 "Tomo man-pages"
+.TH Num.rint 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.rint \- round to nearest integer
 .SH LIBRARY
@@ -29,8 +29,6 @@ The nearest integer value of `x`.
 
 .SH EXAMPLES
 .EX
->> (3.5).rint()
-= 4
->> (2.5).rint()
-= 2
+assert (3.5).rint() == 4
+assert (2.5).rint() == 2
 .EE
diff --git a/man/man3/tomo-Num.round.3 b/man/man3/tomo-Num.round.3
index 5cd46d6a..18075d34 100644
--- a/man/man3/tomo-Num.round.3
+++ b/man/man3/tomo-Num.round.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.round 3 2025-04-30 "Tomo man-pages"
+.TH Num.round 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.round \- round to nearest integer
 .SH LIBRARY
@@ -29,8 +29,6 @@ The nearest integer value of `x`.
 
 .SH EXAMPLES
 .EX
->> (2.3).round()
-= 2
->> (2.7).round()
-= 3
+assert (2.3).round() == 2
+assert (2.7).round() == 3
 .EE
diff --git a/man/man3/tomo-Num.significand.3 b/man/man3/tomo-Num.significand.3
index 1349d08e..8cf9102c 100644
--- a/man/man3/tomo-Num.significand.3
+++ b/man/man3/tomo-Num.significand.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.significand 3 2025-04-30 "Tomo man-pages"
+.TH Num.significand 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.significand \- get mantissa
 .SH LIBRARY
@@ -29,6 +29,5 @@ The significand of `x`.
 
 .SH EXAMPLES
 .EX
->> (1234.567).significand()
-= 0.1234567
+assert (1234.567).significand() == 0.1234567
 .EE
diff --git a/man/man3/tomo-Num.sin.3 b/man/man3/tomo-Num.sin.3
index f338741d..1d67353f 100644
--- a/man/man3/tomo-Num.sin.3
+++ b/man/man3/tomo-Num.sin.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.sin 3 2025-04-30 "Tomo man-pages"
+.TH Num.sin 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.sin \- sine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The sine of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).sin()
-= 0
+assert (0.0).sin() == 0
 .EE
diff --git a/man/man3/tomo-Num.sinh.3 b/man/man3/tomo-Num.sinh.3
index 42ed5158..c154356f 100644
--- a/man/man3/tomo-Num.sinh.3
+++ b/man/man3/tomo-Num.sinh.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.sinh 3 2025-04-30 "Tomo man-pages"
+.TH Num.sinh 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.sinh \- hyperbolic sine
 .SH LIBRARY
@@ -29,6 +29,5 @@ The hyperbolic sine of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).sinh()
-= 0
+assert (0.0).sinh() == 0
 .EE
diff --git a/man/man3/tomo-Num.sqrt.3 b/man/man3/tomo-Num.sqrt.3
index 64784753..82cba25e 100644
--- a/man/man3/tomo-Num.sqrt.3
+++ b/man/man3/tomo-Num.sqrt.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.sqrt 3 2025-04-30 "Tomo man-pages"
+.TH Num.sqrt 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.sqrt \- square root
 .SH LIBRARY
@@ -29,6 +29,5 @@ The square root of `x`.
 
 .SH EXAMPLES
 .EX
->> (16.0).sqrt()
-= 4
+assert (16.0).sqrt() == 4
 .EE
diff --git a/man/man3/tomo-Num.tan.3 b/man/man3/tomo-Num.tan.3
index 3c780247..3e66ebb7 100644
--- a/man/man3/tomo-Num.tan.3
+++ b/man/man3/tomo-Num.tan.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.tan 3 2025-04-30 "Tomo man-pages"
+.TH Num.tan 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.tan \- tangent
 .SH LIBRARY
@@ -29,6 +29,5 @@ The tangent of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).tan()
-= 0
+assert (0.0).tan() == 0
 .EE
diff --git a/man/man3/tomo-Num.tanh.3 b/man/man3/tomo-Num.tanh.3
index e9814b22..86c97449 100644
--- a/man/man3/tomo-Num.tanh.3
+++ b/man/man3/tomo-Num.tanh.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.tanh 3 2025-04-30 "Tomo man-pages"
+.TH Num.tanh 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.tanh \- hyperbolic tangent
 .SH LIBRARY
@@ -29,6 +29,5 @@ The hyperbolic tangent of `x`.
 
 .SH EXAMPLES
 .EX
->> (0.0).tanh()
-= 0
+assert (0.0).tanh() == 0
 .EE
diff --git a/man/man3/tomo-Num.tgamma.3 b/man/man3/tomo-Num.tgamma.3
index e5f450a8..c2cfb0f1 100644
--- a/man/man3/tomo-Num.tgamma.3
+++ b/man/man3/tomo-Num.tgamma.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.tgamma 3 2025-04-30 "Tomo man-pages"
+.TH Num.tgamma 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.tgamma \- true gamma function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The gamma function of `x`.
 
 .SH EXAMPLES
 .EX
->> (1.0).tgamma()
-= 1
+assert (1.0).tgamma() == 1
 .EE
diff --git a/man/man3/tomo-Num.trunc.3 b/man/man3/tomo-Num.trunc.3
index 9d1c9e1e..e32b0949 100644
--- a/man/man3/tomo-Num.trunc.3
+++ b/man/man3/tomo-Num.trunc.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.trunc 3 2025-04-30 "Tomo man-pages"
+.TH Num.trunc 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.trunc \- truncate a number
 .SH LIBRARY
@@ -29,8 +29,6 @@ The integer part of `x` towards zero.
 
 .SH EXAMPLES
 .EX
->> (3.7).trunc()
-= 3
->> (-3.7).trunc()
-= -3
+assert (3.7).trunc() == 3
+assert (-3.7).trunc() == -3
 .EE
diff --git a/man/man3/tomo-Num.with_precision.3 b/man/man3/tomo-Num.with_precision.3
index 6dabcc0c..66b5c0e9 100644
--- a/man/man3/tomo-Num.with_precision.3
+++ b/man/man3/tomo-Num.with_precision.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.with_precision 3 2025-04-30 "Tomo man-pages"
+.TH Num.with_precision 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.with_precision \- round to a given precision
 .SH LIBRARY
@@ -30,10 +30,7 @@ The number, rounded to the given precision level.
 
 .SH EXAMPLES
 .EX
->> (0.1234567).with_precision(0.01)
-= 0.12
->> (123456.).with_precision(100)
-= 123500
->> (1234567.).with_precision(5)
-= 1234565
+assert (0.1234567).with_precision(0.01) == 0.12
+assert (123456.).with_precision(100) == 123500
+assert (1234567.).with_precision(5) == 1234565
 .EE
diff --git a/man/man3/tomo-Num.y0.3 b/man/man3/tomo-Num.y0.3
index d97523d1..0645c252 100644
--- a/man/man3/tomo-Num.y0.3
+++ b/man/man3/tomo-Num.y0.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.y0 3 2025-04-30 "Tomo man-pages"
+.TH Num.y0 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.y0 \- Bessel function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The Bessel function of the second kind of order 0 of `x`.
 
 .SH EXAMPLES
 .EX
->> (1.0).y0()
-= -0.7652
+assert (1.0).y0() == -0.7652
 .EE
diff --git a/man/man3/tomo-Num.y1.3 b/man/man3/tomo-Num.y1.3
index 8f4a8b59..ef572874 100644
--- a/man/man3/tomo-Num.y1.3
+++ b/man/man3/tomo-Num.y1.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Num.y1 3 2025-04-30 "Tomo man-pages"
+.TH Num.y1 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Num.y1 \- Bessel function
 .SH LIBRARY
@@ -29,6 +29,5 @@ The Bessel function of the second kind of order 1 of `x`.
 
 .SH EXAMPLES
 .EX
->> (1.0).y1()
-= 0.4401
+assert (1.0).y1() == 0.4401
 .EE
diff --git a/man/man3/tomo-Path.accessed.3 b/man/man3/tomo-Path.accessed.3
index a3b123e8..51e4bbed 100644
--- a/man/man3/tomo-Path.accessed.3
+++ b/man/man3/tomo-Path.accessed.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.accessed 3 2025-05-17 "Tomo man-pages"
+.TH Path.accessed 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.accessed \- access time
 .SH LIBRARY
@@ -30,8 +30,6 @@ A 64-bit unix epoch timestamp representing when the file or directory was last a
 
 .SH EXAMPLES
 .EX
->> (./file.txt).accessed()
-= 1704221100?
->> (./not-a-file).accessed()
-= none
+assert (./file.txt).accessed() == 1704221100
+assert (./not-a-file).accessed() == none
 .EE
diff --git a/man/man3/tomo-Path.base_name.3 b/man/man3/tomo-Path.base_name.3
index 61ab427f..fe43fc04 100644
--- a/man/man3/tomo-Path.base_name.3
+++ b/man/man3/tomo-Path.base_name.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.base_name 3 2025-05-17 "Tomo man-pages"
+.TH Path.base_name 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.base_name \- base name of a file
 .SH LIBRARY
@@ -29,6 +29,5 @@ The base name of the file or directory.
 
 .SH EXAMPLES
 .EX
->> (./path/to/file.txt).base_name()
-= "file.txt"
+assert (./path/to/file.txt).base_name() == "file.txt"
 .EE
diff --git a/man/man3/tomo-Path.can_execute.3 b/man/man3/tomo-Path.can_execute.3
index 8ede21d2..7f9ed358 100644
--- a/man/man3/tomo-Path.can_execute.3
+++ b/man/man3/tomo-Path.can_execute.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.can_execute 3 2025-05-17 "Tomo man-pages"
+.TH Path.can_execute 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.can_execute \- check execute permissions
 .SH LIBRARY
@@ -29,10 +29,7 @@ path	Path	The path of the file to check. 	-
 
 .SH EXAMPLES
 .EX
->> (/bin/sh).can_execute()
-= yes
->> (/usr/include/stdlib.h).can_execute()
-= no
->> (/non/existant/file).can_execute()
-= no
+assert (/bin/sh).can_execute() == yes
+assert (/usr/include/stdlib.h).can_execute() == no
+assert (/non/existant/file).can_execute() == no
 .EE
diff --git a/man/man3/tomo-Path.can_read.3 b/man/man3/tomo-Path.can_read.3
index 2848fef2..30cb39a0 100644
--- a/man/man3/tomo-Path.can_read.3
+++ b/man/man3/tomo-Path.can_read.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.can_read 3 2025-05-17 "Tomo man-pages"
+.TH Path.can_read 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.can_read \- check read permissions
 .SH LIBRARY
@@ -29,10 +29,7 @@ path	Path	The path of the file to check. 	-
 
 .SH EXAMPLES
 .EX
->> (/usr/include/stdlib.h).can_read()
-= yes
->> (/etc/shadow).can_read()
-= no
->> (/non/existant/file).can_read()
-= no
+assert (/usr/include/stdlib.h).can_read() == yes
+assert (/etc/shadow).can_read() == no
+assert (/non/existant/file).can_read() == no
 .EE
diff --git a/man/man3/tomo-Path.can_write.3 b/man/man3/tomo-Path.can_write.3
index 51c4527b..d1be5006 100644
--- a/man/man3/tomo-Path.can_write.3
+++ b/man/man3/tomo-Path.can_write.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.can_write 3 2025-05-17 "Tomo man-pages"
+.TH Path.can_write 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.can_write \- check write permissions
 .SH LIBRARY
@@ -29,10 +29,7 @@ path	Path	The path of the file to check. 	-
 
 .SH EXAMPLES
 .EX
->> (/tmp).can_write()
-= yes
->> (/etc/passwd).can_write()
-= no
->> (/non/existant/file).can_write()
-= no
+assert (/tmp).can_write() == yes
+assert (/etc/passwd).can_write() == no
+assert (/non/existant/file).can_write() == no
 .EE
diff --git a/man/man3/tomo-Path.changed.3 b/man/man3/tomo-Path.changed.3
index 21e487b1..b6bd8033 100644
--- a/man/man3/tomo-Path.changed.3
+++ b/man/man3/tomo-Path.changed.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.changed 3 2025-05-17 "Tomo man-pages"
+.TH Path.changed 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.changed \- get the last changed time
 .SH LIBRARY
@@ -33,8 +33,6 @@ This is the ["ctime"](https://en.wikipedia.org/wiki/Stat_(system_call)#ctime) of
 
 .SH EXAMPLES
 .EX
->> (./file.txt).changed()
-= 1704221100?
->> (./not-a-file).changed()
-= none
+assert (./file.txt).changed() == 1704221100
+assert (./not-a-file).changed() == none
 .EE
diff --git a/man/man3/tomo-Path.child.3 b/man/man3/tomo-Path.child.3
index c1d9b27b..f61bc9d0 100644
--- a/man/man3/tomo-Path.child.3
+++ b/man/man3/tomo-Path.child.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.child 3 2025-05-17 "Tomo man-pages"
+.TH Path.child 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.child \- append a child to a path
 .SH LIBRARY
@@ -30,6 +30,5 @@ A new path representing the child.
 
 .SH EXAMPLES
 .EX
->> (./directory).child("file.txt")
-= (./directory/file.txt)
+assert (./directory).child("file.txt") == (./directory/file.txt)
 .EE
diff --git a/man/man3/tomo-Path.children.3 b/man/man3/tomo-Path.children.3
index 8b5168a6..10e80713 100644
--- a/man/man3/tomo-Path.children.3
+++ b/man/man3/tomo-Path.children.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.children 3 2025-05-17 "Tomo man-pages"
+.TH Path.children 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.children \- get children of a directory
 .SH LIBRARY
@@ -30,6 +30,5 @@ A list of paths for the children.
 
 .SH EXAMPLES
 .EX
->> (./directory).children(include_hidden=yes)
-= [".git", "foo.txt"]
+assert (./directory).children(include_hidden=yes) == [".git", "foo.txt"]
 .EE
diff --git a/man/man3/tomo-Path.current_dir.3 b/man/man3/tomo-Path.current_dir.3
index f15439de..2d887983 100644
--- a/man/man3/tomo-Path.current_dir.3
+++ b/man/man3/tomo-Path.current_dir.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.current_dir 3 2025-05-17 "Tomo man-pages"
+.TH Path.current_dir 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.current_dir \- get current directory
 .SH LIBRARY
@@ -20,6 +20,5 @@ The absolute path of the current directory.
 
 .SH EXAMPLES
 .EX
->> Path.current_dir()
-= (/home/user/tomo)
+assert Path.current_dir() == (/home/user/tomo)
 .EE
diff --git a/man/man3/tomo-Path.exists.3 b/man/man3/tomo-Path.exists.3
index 3ac63a15..923fa27d 100644
--- a/man/man3/tomo-Path.exists.3
+++ b/man/man3/tomo-Path.exists.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.exists 3 2025-05-17 "Tomo man-pages"
+.TH Path.exists 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.exists \- check if a path exists
 .SH LIBRARY
@@ -29,6 +29,5 @@ path	Path	The path to check. 	-
 
 .SH EXAMPLES
 .EX
->> (/).exists()
-= yes
+assert (/).exists() == yes
 .EE
diff --git a/man/man3/tomo-Path.extension.3 b/man/man3/tomo-Path.extension.3
index 08d348c8..f77f692a 100644
--- a/man/man3/tomo-Path.extension.3
+++ b/man/man3/tomo-Path.extension.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.extension 3 2025-05-17 "Tomo man-pages"
+.TH Path.extension 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.extension \- get file extension
 .SH LIBRARY
@@ -30,12 +30,8 @@ The file extension (not including the leading `.`) or an empty text if there is
 
 .SH EXAMPLES
 .EX
->> (./file.tar.gz).extension()
-= "tar.gz"
->> (./file.tar.gz).extension(full=no)
-= "gz"
->> (/foo).extension()
-= ""
->> (./.git).extension()
-= ""
+assert (./file.tar.gz).extension() == "tar.gz"
+assert (./file.tar.gz).extension(full=no) == "gz"
+assert (/foo).extension() == ""
+assert (./.git).extension() == ""
 .EE
diff --git a/man/man3/tomo-Path.files.3 b/man/man3/tomo-Path.files.3
index 74b2168b..fcde934f 100644
--- a/man/man3/tomo-Path.files.3
+++ b/man/man3/tomo-Path.files.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.files 3 2025-05-17 "Tomo man-pages"
+.TH Path.files 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.files \- list files in a directory
 .SH LIBRARY
@@ -30,6 +30,5 @@ A list of file paths.
 
 .SH EXAMPLES
 .EX
->> (./directory).files(include_hidden=yes)
-= [(./directory/file1.txt), (./directory/file2.txt)]
+assert (./directory).files(include_hidden=yes) == [(./directory/file1.txt), (./directory/file2.txt)]
 .EE
diff --git a/man/man3/tomo-Path.from_components.3 b/man/man3/tomo-Path.from_components.3
index 8fe4929f..f7dbd7f1 100644
--- a/man/man3/tomo-Path.from_components.3
+++ b/man/man3/tomo-Path.from_components.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.from_components 3 2025-05-17 "Tomo man-pages"
+.TH Path.from_components 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.from_components \- build a path from components
 .SH LIBRARY
@@ -29,10 +29,7 @@ A path representing the given components.
 
 .SH EXAMPLES
 .EX
->> Path.from_components(["/", "usr", "include"])
-= /usr/include
->> Path.from_components(["foo.txt"])
-= ./foo.txt
->> Path.from_components(["~", ".local"])
-= ~/.local
+assert Path.from_components(["/", "usr", "include"]) == (/usr/include)
+assert Path.from_components(["foo.txt"]) == (./foo.txt)
+assert Path.from_components(["~", ".local"]) == (~/.local)
 .EE
diff --git a/man/man3/tomo-Path.glob.3 b/man/man3/tomo-Path.glob.3
index 6d857322..07de7a33 100644
--- a/man/man3/tomo-Path.glob.3
+++ b/man/man3/tomo-Path.glob.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.glob 3 2025-05-17 "Tomo man-pages"
+.TH Path.glob 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.glob \- perform file globbing
 .SH LIBRARY
@@ -36,19 +36,11 @@ A list of file paths that match the glob.
 .SH EXAMPLES
 .EX
 # Current directory includes: foo.txt, baz.txt, qux.jpg, .hidden
->> (./*).glob()
-= [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
->> (./*.txt).glob()
-= [(./foo.txt), (./baz.txt)]
-
->> (./*.{txt,jpg}).glob()
-= [(./foo.txt), (./baz.txt), (./qux.jpg)]
-
->> (./.*).glob()
-= [(./.hidden)]
+assert (./*).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+assert (./*.txt).glob() == [(./foo.txt), (./baz.txt)]
+assert (./*.{txt,jpg}).glob() == [(./foo.txt), (./baz.txt), (./qux.jpg)]
+assert (./.*).glob() == [(./.hidden)]
 
 # Globs with no matches return an empty list:
->> (./*.xxx).glob()
-= []
+assert (./*.xxx).glob() == []
 .EE
diff --git a/man/man3/tomo-Path.group.3 b/man/man3/tomo-Path.group.3
index bb49b4f3..5c9f80c8 100644
--- a/man/man3/tomo-Path.group.3
+++ b/man/man3/tomo-Path.group.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.group 3 2025-05-17 "Tomo man-pages"
+.TH Path.group 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.group \- get the owning group
 .SH LIBRARY
@@ -30,8 +30,6 @@ The name of the group which owns the file or directory, or `none` if the path do
 
 .SH EXAMPLES
 .EX
->> (/bin).group()
-= "root"
->> (/non/existent/file).group()
-= none
+assert (/bin).group() == "root"
+assert (/non/existent/file).group() == none
 .EE
diff --git a/man/man3/tomo-Path.has_extension.3 b/man/man3/tomo-Path.has_extension.3
index 4556c819..ffd1f967 100644
--- a/man/man3/tomo-Path.has_extension.3
+++ b/man/man3/tomo-Path.has_extension.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.has_extension 3 2025-06-24 "Tomo man-pages"
+.TH Path.has_extension 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.has_extension \- check if a path has a given extension
 .SH LIBRARY
@@ -30,12 +30,8 @@ Whether or not the path has the given extension.
 
 .SH EXAMPLES
 .EX
->> (/foo.txt).has_extension("txt")
-= yes
->> (/foo.txt).has_extension(".txt")
-= yes
->> (/foo.tar.gz).has_extension("gz")
-= yes
->> (/foo.tar.gz).has_extension("zip")
-= no
+assert (/foo.txt).has_extension("txt") == yes
+assert (/foo.txt).has_extension(".txt") == yes
+assert (/foo.tar.gz).has_extension("gz") == yes
+assert (/foo.tar.gz).has_extension("zip") == no
 .EE
diff --git a/man/man3/tomo-Path.is_directory.3 b/man/man3/tomo-Path.is_directory.3
index 5b098b98..8ed41249 100644
--- a/man/man3/tomo-Path.is_directory.3
+++ b/man/man3/tomo-Path.is_directory.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.is_directory 3 2025-05-17 "Tomo man-pages"
+.TH Path.is_directory 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.is_directory \- check if a path is a directory
 .SH LIBRARY
@@ -30,9 +30,6 @@ follow_symlinks		Whether to follow symbolic links. 	yes
 
 .SH EXAMPLES
 .EX
->> (./directory/).is_directory()
-= yes
-
->> (./file.txt).is_directory()
-= no
+assert (./directory/).is_directory() == yes
+assert (./file.txt).is_directory() == no
 .EE
diff --git a/man/man3/tomo-Path.is_file.3 b/man/man3/tomo-Path.is_file.3
index b5d3b8f2..8d6218f3 100644
--- a/man/man3/tomo-Path.is_file.3
+++ b/man/man3/tomo-Path.is_file.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.is_file 3 2025-05-17 "Tomo man-pages"
+.TH Path.is_file 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.is_file \- check if a path is a file
 .SH LIBRARY
@@ -30,9 +30,6 @@ follow_symlinks		Whether to follow symbolic links. 	yes
 
 .SH EXAMPLES
 .EX
->> (./file.txt).is_file()
-= yes
-
->> (./directory/).is_file()
-= no
+assert (./file.txt).is_file() == yes
+assert (./directory/).is_file() == no
 .EE
diff --git a/man/man3/tomo-Path.is_socket.3 b/man/man3/tomo-Path.is_socket.3
index 1565cc92..1733364e 100644
--- a/man/man3/tomo-Path.is_socket.3
+++ b/man/man3/tomo-Path.is_socket.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.is_socket 3 2025-05-17 "Tomo man-pages"
+.TH Path.is_socket 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.is_socket \- check if a path is a socket
 .SH LIBRARY
@@ -30,6 +30,5 @@ follow_symlinks		Whether to follow symbolic links. 	yes
 
 .SH EXAMPLES
 .EX
->> (./socket).is_socket()
-= yes
+assert (./socket).is_socket() == yes
 .EE
diff --git a/man/man3/tomo-Path.is_symlink.3 b/man/man3/tomo-Path.is_symlink.3
index a09ea8c8..6a8bdb7e 100644
--- a/man/man3/tomo-Path.is_symlink.3
+++ b/man/man3/tomo-Path.is_symlink.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.is_symlink 3 2025-05-17 "Tomo man-pages"
+.TH Path.is_symlink 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.is_symlink \- check if a path is a symbolic link
 .SH LIBRARY
@@ -29,6 +29,5 @@ path	Path	The path to check. 	-
 
 .SH EXAMPLES
 .EX
->> (./link).is_symlink()
-= yes
+assert (./link).is_symlink() == yes
 .EE
diff --git a/man/man3/tomo-Path.modified.3 b/man/man3/tomo-Path.modified.3
index 61d7d064..c91aae03 100644
--- a/man/man3/tomo-Path.modified.3
+++ b/man/man3/tomo-Path.modified.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.modified 3 2025-05-17 "Tomo man-pages"
+.TH Path.modified 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.modified \- get file modification time
 .SH LIBRARY
@@ -30,8 +30,6 @@ A 64-bit unix epoch timestamp representing when the file or directory was last m
 
 .SH EXAMPLES
 .EX
->> (./file.txt).modified()
-= 1704221100?
->> (./not-a-file).modified()
-= none
+assert (./file.txt).modified() == 1704221100
+assert (./not-a-file).modified() == none
 .EE
diff --git a/man/man3/tomo-Path.owner.3 b/man/man3/tomo-Path.owner.3
index af9e40e7..2f4913cd 100644
--- a/man/man3/tomo-Path.owner.3
+++ b/man/man3/tomo-Path.owner.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.owner 3 2025-05-17 "Tomo man-pages"
+.TH Path.owner 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.owner \- get file owner
 .SH LIBRARY
@@ -30,8 +30,6 @@ The name of the user who owns the file or directory, or `none` if the path does
 
 .SH EXAMPLES
 .EX
->> (/bin).owner()
-= "root"
->> (/non/existent/file).owner()
-= none
+assert (/bin).owner() == "root"
+assert (/non/existent/file).owner() == none
 .EE
diff --git a/man/man3/tomo-Path.parent.3 b/man/man3/tomo-Path.parent.3
index 03528c2c..459d97c3 100644
--- a/man/man3/tomo-Path.parent.3
+++ b/man/man3/tomo-Path.parent.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.parent 3 2025-05-17 "Tomo man-pages"
+.TH Path.parent 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.parent \- get parent directory
 .SH LIBRARY
@@ -29,6 +29,5 @@ The path of the parent directory.
 
 .SH EXAMPLES
 .EX
->> (./path/to/file.txt).parent()
-= (./path/to/)
+assert (./path/to/file.txt).parent() == (./path/to/)
 .EE
diff --git a/man/man3/tomo-Path.read.3 b/man/man3/tomo-Path.read.3
index b3c4ba44..779bb397 100644
--- a/man/man3/tomo-Path.read.3
+++ b/man/man3/tomo-Path.read.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.read 3 2025-05-17 "Tomo man-pages"
+.TH Path.read 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.read \- read file contents
 .SH LIBRARY
@@ -29,9 +29,6 @@ The contents of the file. If the file could not be read, none will be returned.
 
 .SH EXAMPLES
 .EX
->> (./hello.txt).read()
-= "Hello"?
-
->> (./nosuchfile.xxx).read()
-= none
+assert (./hello.txt).read() == "Hello"
+assert (./nosuchfile.xxx).read() == none
 .EE
diff --git a/man/man3/tomo-Path.read_bytes.3 b/man/man3/tomo-Path.read_bytes.3
index 22604598..a23cbf6d 100644
--- a/man/man3/tomo-Path.read_bytes.3
+++ b/man/man3/tomo-Path.read_bytes.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.read_bytes 3 2025-05-17 "Tomo man-pages"
+.TH Path.read_bytes 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.read_bytes \- read file contents as bytes
 .SH LIBRARY
@@ -30,9 +30,6 @@ The byte contents of the file. If the file cannot be read, none will be returned
 
 .SH EXAMPLES
 .EX
->> (./hello.txt).read()
-= [72, 101, 108, 108, 111]?
-
->> (./nosuchfile.xxx).read()
-= none
+assert (./hello.txt).read() == [72, 101, 108, 108, 111]
+assert (./nosuchfile.xxx).read() == none
 .EE
diff --git a/man/man3/tomo-Path.relative_to.3 b/man/man3/tomo-Path.relative_to.3
index 5225870b..963b9a5b 100644
--- a/man/man3/tomo-Path.relative_to.3
+++ b/man/man3/tomo-Path.relative_to.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.relative_to 3 2025-05-17 "Tomo man-pages"
+.TH Path.relative_to 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.relative_to \- apply a relative path to another
 .SH LIBRARY
@@ -30,6 +30,5 @@ The relative path.
 
 .SH EXAMPLES
 .EX
->> (./path/to/file.txt).relative(relative_to=(./path))
-= (./to/file.txt)
+assert (./path/to/file.txt).relative(relative_to=(./path)) == (./to/file.txt)
 .EE
diff --git a/man/man3/tomo-Path.resolved.3 b/man/man3/tomo-Path.resolved.3
index e2479595..a40fd80c 100644
--- a/man/man3/tomo-Path.resolved.3
+++ b/man/man3/tomo-Path.resolved.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.resolved 3 2025-05-17 "Tomo man-pages"
+.TH Path.resolved 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.resolved \- resolve a path
 .SH LIBRARY
@@ -30,9 +30,6 @@ The resolved absolute path.
 
 .SH EXAMPLES
 .EX
->> (~/foo).resolved()
-= (/home/user/foo)
-
->> (./path/to/file.txt).resolved(relative_to=(/foo))
-= (/foo/path/to/file.txt)
+assert (~/foo).resolved() == (/home/user/foo)
+assert (./path/to/file.txt).resolved(relative_to=(/foo)) == (/foo/path/to/file.txt)
 .EE
diff --git a/man/man3/tomo-Path.sibling.3 b/man/man3/tomo-Path.sibling.3
index 5cd1afa1..5c39d159 100644
--- a/man/man3/tomo-Path.sibling.3
+++ b/man/man3/tomo-Path.sibling.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.sibling 3 2025-05-17 "Tomo man-pages"
+.TH Path.sibling 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.sibling \- get another path in the same directory
 .SH LIBRARY
@@ -30,6 +30,5 @@ A new path representing the sibling.
 
 .SH EXAMPLES
 .EX
->> (/foo/baz).sibling("doop")
-= (/foo/doop)
+assert (/foo/baz).sibling("doop") == (/foo/doop)
 .EE
diff --git a/man/man3/tomo-Path.subdirectories.3 b/man/man3/tomo-Path.subdirectories.3
index 1ac0e258..a691f94a 100644
--- a/man/man3/tomo-Path.subdirectories.3
+++ b/man/man3/tomo-Path.subdirectories.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.subdirectories 3 2025-05-17 "Tomo man-pages"
+.TH Path.subdirectories 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.subdirectories \- get subdirectories
 .SH LIBRARY
@@ -30,9 +30,6 @@ A list of subdirectory paths.
 
 .SH EXAMPLES
 .EX
->> (./directory).subdirectories()
-= [(./directory/subdir1), (./directory/subdir2)]
-
->> (./directory).subdirectories(include_hidden=yes)
-= [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
+assert (./directory).subdirectories() == [(./directory/subdir1), (./directory/subdir2)]
+assert (./directory).subdirectories(include_hidden=yes) == [(./directory/.git), (./directory/subdir1), (./directory/subdir2)]
 .EE
diff --git a/man/man3/tomo-Path.unique_directory.3 b/man/man3/tomo-Path.unique_directory.3
index 02b4b7e7..866ca565 100644
--- a/man/man3/tomo-Path.unique_directory.3
+++ b/man/man3/tomo-Path.unique_directory.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.unique_directory 3 2025-05-17 "Tomo man-pages"
+.TH Path.unique_directory 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.unique_directory \- create a directory with a unique name
 .SH LIBRARY
@@ -29,9 +29,7 @@ A unique directory path after creating the directory.
 
 .SH EXAMPLES
 .EX
->> created := (/tmp/my-dir.XXXXXX).unique_directory()
-= (/tmp/my-dir-AwoxbM/)
->> created.is_directory()
-= yes
+assert created := (/tmp/my-dir.XXXXXX).unique_directory() == (/tmp/my-dir-AwoxbM/)
+assert created.is_directory() == yes
 created.remove()
 .EE
diff --git a/man/man3/tomo-Path.write_unique.3 b/man/man3/tomo-Path.write_unique.3
index 27ac6341..94f3cd6f 100644
--- a/man/man3/tomo-Path.write_unique.3
+++ b/man/man3/tomo-Path.write_unique.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.write_unique 3 2025-05-17 "Tomo man-pages"
+.TH Path.write_unique 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.write_unique \- write to a uniquely named file
 .SH LIBRARY
@@ -30,9 +30,8 @@ The path of the newly created unique file.
 
 .SH EXAMPLES
 .EX
->> created := (./file-XXXXXX.txt).write_unique("Hello, world!")
-= (./file-27QHtq.txt)
->> created.read()
-= "Hello, world!"
+created := (./file-XXXXXX.txt).write_unique("Hello, world!")
+assert created == (./file-27QHtq.txt)
+assert created.read() == "Hello, world!"
 created.remove()
 .EE
diff --git a/man/man3/tomo-Path.write_unique_bytes.3 b/man/man3/tomo-Path.write_unique_bytes.3
index 077dc44a..f4a82e63 100644
--- a/man/man3/tomo-Path.write_unique_bytes.3
+++ b/man/man3/tomo-Path.write_unique_bytes.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Path.write_unique_bytes 3 2025-05-17 "Tomo man-pages"
+.TH Path.write_unique_bytes 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Path.write_unique_bytes \- write bytes to a uniquely named file
 .SH LIBRARY
@@ -30,9 +30,8 @@ The path of the newly created unique file.
 
 .SH EXAMPLES
 .EX
->> created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
-= (./file-27QHtq.txt)
->> created.read()
-= [1, 2, 3]
+created := (./file-XXXXXX.txt).write_unique_bytes([1, 2, 3])
+assert created == (./file-27QHtq.txt)
+assert created.read() == [1, 2, 3]
 created.remove()
 .EE
diff --git a/man/man3/tomo-Table.clear.3 b/man/man3/tomo-Table.clear.3
index c7eeb8bd..5b1be29e 100644
--- a/man/man3/tomo-Table.clear.3
+++ b/man/man3/tomo-Table.clear.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.clear 3 2025-05-17 "Tomo man-pages"
+.TH Table.clear 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.clear \- clear a table
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.clear\ :\ func(t:\ &{K=V}\ ->\ Void)
+.BI Table.clear\ :\ func(t:\ &{K:V}\ ->\ Void)
 .fi
 .SH DESCRIPTION
 Removes all key-value pairs from the table.
@@ -22,12 +22,14 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	&{K=V}	The reference to the table. 	-
+t	&{K:V}	The reference to the table. 	-
 .TE
 .SH RETURN
 Nothing.
 
 .SH EXAMPLES
 .EX
->> t.clear()
+t := &{"A":1}
+t.clear()
+assert t == {}
 .EE
diff --git a/man/man3/tomo-Table.get.3 b/man/man3/tomo-Table.get.3
index 97bae770..ede699cf 100644
--- a/man/man3/tomo-Table.get.3
+++ b/man/man3/tomo-Table.get.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.get 3 2025-05-17 "Tomo man-pages"
+.TH Table.get 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.get \- get an item from a table
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.get\ :\ func(t:\ {K=V},\ key:\ K\ ->\ V?)
+.BI Table.get\ :\ func(t:\ {K:V},\ key:\ K\ ->\ V?)
 .fi
 .SH DESCRIPTION
 Retrieves the value associated with a key, or returns `none` if the key is not present.
@@ -22,7 +22,7 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	{K=V}	The table. 	-
+t	{K:V}	The table. 	-
 key	K	The key whose associated value is to be retrieved. 	-
 .TE
 .SH RETURN
@@ -33,16 +33,9 @@ Default values for the table are ignored.
 
 .SH EXAMPLES
 .EX
->> t := {"A"=1, "B"=2}
->> t.get("A")
-= 1?
-
->> t.get("????")
-= none
-
->> t.get("A")!
-= 1
-
->> t.get("????") or 0
-= 0
+t := {"A": 1, "B": 2}
+assert t.get("A") == 1
+assert t.get("????") == none
+assert t.get("A")! == 1
+assert t.get("????") or 0 == 0
 .EE
diff --git a/man/man3/tomo-Table.get_or_set.3 b/man/man3/tomo-Table.get_or_set.3
index d607171a..38e73a4b 100644
--- a/man/man3/tomo-Table.get_or_set.3
+++ b/man/man3/tomo-Table.get_or_set.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.get_or_set 3 2025-05-17 "Tomo man-pages"
+.TH Table.get_or_set 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.get_or_set \- get an item or set a default if absent
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.get_or_set\ :\ func(t:\ &{K=V},\ key:\ K,\ default:\ V\ ->\ V?)
+.BI Table.get_or_set\ :\ func(t:\ &{K:V},\ key:\ K,\ default:\ V\ ->\ V?)
 .fi
 .SH DESCRIPTION
 If the given key is in the table, return the associated value. Otherwise, insert the given default value into the table and return it.
@@ -22,7 +22,7 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	&{K=V}	The table. 	-
+t	&{K:V}	The table. 	-
 key	K	The key whose associated value is to be retrieved. 	-
 default	V	The default value to insert and return if the key is not present in the table. 	-
 .TE
@@ -35,14 +35,11 @@ The default value is only evaluated if the key is missing.
 
 .SH EXAMPLES
 .EX
->> t := &{"A"=@[1, 2, 3]; default=@[]}
->> t.get_or_set("A").insert(4)
->> t.get_or_set("B").insert(99)
->> t
-= &{"A"=@[1, 2, 3, 4], "B"=@[99]}
+t := &{"A": @[1, 2, 3]; default=@[]}
+t.get_or_set("A").insert(4)
+t.get_or_set("B").insert(99)
+assert t == &{"A": @[1, 2, 3, 4], "B": @[99]}
 
->> t.get_or_set("C", @[0, 0, 0])
-= @[0, 0, 0]
->> t
-= &{"A"=@[1, 2, 3, 4], "B"=@[99], "C"=@[0, 0, 0]}
+assert t.get_or_set("C", @[0, 0, 0]) == @[0, 0, 0]
+assert t == &{"A": @[1, 2, 3, 4], "B": @[99], "C": @[0, 0, 0]}
 .EE
diff --git a/man/man3/tomo-Table.has.3 b/man/man3/tomo-Table.has.3
index 40111400..b2efffd6 100644
--- a/man/man3/tomo-Table.has.3
+++ b/man/man3/tomo-Table.has.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.has 3 2025-05-17 "Tomo man-pages"
+.TH Table.has 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.has \- check for a key
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.has\ :\ func(t:\ {K=V},\ key:\ K\ ->\ Bool)
+.BI Table.has\ :\ func(t:\ {K:V},\ key:\ K\ ->\ Bool)
 .fi
 .SH DESCRIPTION
 Checks if the table contains a specified key.
@@ -22,7 +22,7 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	{K=V}	The table. 	-
+t	{K:V}	The table. 	-
 key	K	The key to check for presence. 	-
 .TE
 .SH RETURN
@@ -30,8 +30,6 @@ key	K	The key to check for presence. 	-
 
 .SH EXAMPLES
 .EX
->> {"A"=1, "B"=2}.has("A")
-= yes
->> {"A"=1, "B"=2}.has("xxx")
-= no
+assert {"A": 1, "B": 2}.has("A") == yes
+assert {"A": 1, "B": 2}.has("xxx") == no
 .EE
diff --git a/man/man3/tomo-Table.remove.3 b/man/man3/tomo-Table.remove.3
index 5fbb31d7..ce6010b3 100644
--- a/man/man3/tomo-Table.remove.3
+++ b/man/man3/tomo-Table.remove.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.remove 3 2025-05-17 "Tomo man-pages"
+.TH Table.remove 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.remove \- remove a table entry
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.remove\ :\ func(t:\ {K=V},\ key:\ K\ ->\ Void)
+.BI Table.remove\ :\ func(t:\ {K:V},\ key:\ K\ ->\ Void)
 .fi
 .SH DESCRIPTION
 Removes the key-value pair associated with a specified key.
@@ -22,7 +22,7 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	{K=V}	The reference to the table. 	-
+t	{K:V}	The reference to the table. 	-
 key	K	The key of the key-value pair to remove. 	-
 .TE
 .SH RETURN
@@ -30,8 +30,7 @@ Nothing.
 
 .SH EXAMPLES
 .EX
-t := {"A"=1, "B"=2}
+t := {"A": 1, "B": 2}
 t.remove("A")
->> t
-= {"B"=2}
+assert t == {"B": 2}
 .EE
diff --git a/man/man3/tomo-Table.set.3 b/man/man3/tomo-Table.set.3
index b3ffdd1d..f1303189 100644
--- a/man/man3/tomo-Table.set.3
+++ b/man/man3/tomo-Table.set.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.set 3 2025-05-17 "Tomo man-pages"
+.TH Table.set 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.set \- set a table entry
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.set\ :\ func(t:\ {K=V},\ key:\ K,\ value:\ V\ ->\ Void)
+.BI Table.set\ :\ func(t:\ {K:V},\ key:\ K,\ value:\ V\ ->\ Void)
 .fi
 .SH DESCRIPTION
 Sets or updates the value associated with a specified key.
@@ -22,7 +22,7 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	{K=V}	The reference to the table. 	-
+t	{K:V}	The reference to the table. 	-
 key	K	The key to set or update. 	-
 value	V	The value to associate with the key. 	-
 .TE
@@ -31,8 +31,7 @@ Nothing.
 
 .SH EXAMPLES
 .EX
-t := {"A"=1, "B"=2}
+t := {"A": 1, "B": 2}
 t.set("C", 3)
->> t
-= {"A"=1, "B"=2, "C"=3}
+assert t == {"A": 1, "B": 2, "C": 3}
 .EE
diff --git a/man/man3/tomo-Table.with_fallback.3 b/man/man3/tomo-Table.with_fallback.3
index 89c78fe1..c0719bd3 100644
--- a/man/man3/tomo-Table.with_fallback.3
+++ b/man/man3/tomo-Table.with_fallback.3
@@ -2,14 +2,14 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Table.with_fallback 3 2025-06-24 "Tomo man-pages"
+.TH Table.with_fallback 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Table.with_fallback \- return a table with a new fallback
 .SH LIBRARY
 Tomo Standard Library
 .SH SYNOPSIS
 .nf
-.BI Table.with_fallback\ :\ func(t:\ {K=V},\ fallback:\ {K=V}?\ ->\ {K=V})
+.BI Table.with_fallback\ :\ func(t:\ {K:V},\ fallback:\ {K:V}?\ ->\ {K:V})
 .fi
 .SH DESCRIPTION
 Return a copy of a table with a different fallback table.
@@ -22,19 +22,17 @@ allbox;
 lb lb lbx lb
 l l l l.
 Name	Type	Description	Default
-t	{K=V}	The table whose fallback will be replaced. 	-
-fallback	{K=V}?	The new fallback table value. 	-
+t	{K:V}	The table whose fallback will be replaced. 	-
+fallback	{K:V}?	The new fallback table value. 	-
 .TE
 .SH RETURN
 The original table with a different fallback.
 
 .SH EXAMPLES
 .EX
-t := {"A"=1; fallback={"B"=2}}
-t2 = t.with_fallback({"B"=3"})
->> t2["B"]
-= 3?
+t := {"A": 1; fallback={"B": 2}}
+t2 = t.with_fallback({"B": 3"})
+assert t2["B"] == 3
 t3 = t.with_fallback(none)
->> t2["B"]
-= none
+assert t2["B"] == none
 .EE
diff --git a/man/man3/tomo-Text.as_c_string.3 b/man/man3/tomo-Text.as_c_string.3
index ad3c0a2d..ef49eeb7 100644
--- a/man/man3/tomo-Text.as_c_string.3
+++ b/man/man3/tomo-Text.as_c_string.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.as_c_string 3 2025-04-30 "Tomo man-pages"
+.TH Text.as_c_string 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.as_c_string \- convert to C-style string
 .SH LIBRARY
@@ -29,6 +29,5 @@ A C-style string (`CString`) representing the text.
 
 .SH EXAMPLES
 .EX
->> "Hello".as_c_string()
-= CString("Hello")
+assert "Hello".as_c_string() == CString("Hello")
 .EE
diff --git a/man/man3/tomo-Text.at.3 b/man/man3/tomo-Text.at.3
index e9b3e8ae..2d46c256 100644
--- a/man/man3/tomo-Text.at.3
+++ b/man/man3/tomo-Text.at.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.at 3 2025-04-30 "Tomo man-pages"
+.TH Text.at 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.at \- get a letter
 .SH LIBRARY
@@ -33,6 +33,5 @@ Negative indices are counted from the back of the text, so `-1` means the last c
 
 .SH EXAMPLES
 .EX
->> "Amélie".at(3)
-= "é"
+assert "Amélie".at(3) == "é"
 .EE
diff --git a/man/man3/tomo-Text.caseless_equals.3 b/man/man3/tomo-Text.caseless_equals.3
index 97850208..1470c4db 100644
--- a/man/man3/tomo-Text.caseless_equals.3
+++ b/man/man3/tomo-Text.caseless_equals.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.caseless_equals 3 2025-04-30 "Tomo man-pages"
+.TH Text.caseless_equals 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.caseless_equals \- case-insensitive comparison
 .SH LIBRARY
@@ -31,10 +31,8 @@ language	Text	The ISO 639 language code for which casing rules to use. 	"C"
 
 .SH EXAMPLES
 .EX
->> "A".caseless_equals("a")
-= yes
+assert "A".caseless_equals("a") == yes
 
 # Turkish lowercase "I" is "ı" (dotless I), not "i"
->> "I".caseless_equals("i", language="tr_TR")
-= no
+assert "I".caseless_equals("i", language="tr_TR") == no
 .EE
diff --git a/man/man3/tomo-Text.codepoint_names.3 b/man/man3/tomo-Text.codepoint_names.3
index 36c9ba06..61a4c9a5 100644
--- a/man/man3/tomo-Text.codepoint_names.3
+++ b/man/man3/tomo-Text.codepoint_names.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.codepoint_names 3 2025-04-30 "Tomo man-pages"
+.TH Text.codepoint_names 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.codepoint_names \- get unicode codepoint names
 .SH LIBRARY
@@ -29,6 +29,12 @@ A list of codepoint names (`[Text]`).
 
 .SH EXAMPLES
 .EX
->> "Amélie".codepoint_names()
-= ["LATIN CAPITAL LETTER A", "LATIN SMALL LETTER M", "LATIN SMALL LETTER E WITH ACUTE", "LATIN SMALL LETTER L", "LATIN SMALL LETTER I", "LATIN SMALL LETTER E"]
+assert "Amélie".codepoint_names() == [
+    "LATIN CAPITAL LETTER A",
+    "LATIN SMALL LETTER M",
+    "LATIN SMALL LETTER E WITH ACUTE",
+    "LATIN SMALL LETTER L",
+    "LATIN SMALL LETTER I",
+    "LATIN SMALL LETTER E",
+]
 .EE
diff --git a/man/man3/tomo-Text.ends_with.3 b/man/man3/tomo-Text.ends_with.3
index 38fa4c0b..7b5ff696 100644
--- a/man/man3/tomo-Text.ends_with.3
+++ b/man/man3/tomo-Text.ends_with.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.ends_with 3 2025-08-16 "Tomo man-pages"
+.TH Text.ends_with 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.ends_with \- check suffix
 .SH LIBRARY
@@ -31,11 +31,8 @@ remainder	&Text?	If non-none, this value will be set to the rest of the text up
 
 .SH EXAMPLES
 .EX
->> "hello world".ends_with("world")
-= yes
+assert "hello world".ends_with("world") == yes
 remainder : Text
->> "hello world".ends_with("world", &remainder)
-= yes
->> remainder
-= "hello "
+assert "hello world".ends_with("world", &remainder) == yes
+assert remainder == "hello "
 .EE
diff --git a/man/man3/tomo-Text.from.3 b/man/man3/tomo-Text.from.3
index 43ab22ab..6132c572 100644
--- a/man/man3/tomo-Text.from.3
+++ b/man/man3/tomo-Text.from.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.from 3 2025-04-30 "Tomo man-pages"
+.TH Text.from 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.from \- slice from a starting index
 .SH LIBRARY
@@ -33,9 +33,6 @@ A negative index counts backwards from the end of the text, so `-1` refers to th
 
 .SH EXAMPLES
 .EX
->> "hello".from(2)
-= "ello"
-
->> "hello".from(-2)
-= "lo"
+assert "hello".from(2) == "ello"
+assert "hello".from(-2) == "lo"
 .EE
diff --git a/man/man3/tomo-Text.from_c_string.3 b/man/man3/tomo-Text.from_c_string.3
index 2670f484..98b153d8 100644
--- a/man/man3/tomo-Text.from_c_string.3
+++ b/man/man3/tomo-Text.from_c_string.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.from_c_string 3 2025-04-30 "Tomo man-pages"
+.TH Text.from_c_string 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.from_c_string \- convert C-style string to text
 .SH LIBRARY
@@ -29,6 +29,5 @@ A `Text` value representing the C-style string.
 
 .SH EXAMPLES
 .EX
->> Text.from_c_string(CString("Hello"))
-= "Hello"
+assert Text.from_c_string(CString("Hello")) == "Hello"
 .EE
diff --git a/man/man3/tomo-Text.from_utf16.3 b/man/man3/tomo-Text.from_utf16.3
index d4eaea02..6668baf0 100644
--- a/man/man3/tomo-Text.from_utf16.3
+++ b/man/man3/tomo-Text.from_utf16.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.from_utf16 3 2025-09-09 "Tomo man-pages"
+.TH Text.from_utf16 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.from_utf16 \- convert UTF16 list to text
 .SH LIBRARY
@@ -32,8 +32,6 @@ The text will be normalized, so the resulting text's UTF16 sequence may not exac
 
 .SH EXAMPLES
 .EX
->> Text.from_utf16([197, 107, 101])
-= "Åke"
->> Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028])
-= "こんにちは世界".utf16()
+assert Text.from_utf16([197, 107, 101]) == "Åke"
+assert Text.from_utf16([12371, 12435, 12395, 12385, 12399, 19990, 30028]) == "こんにちは世界".utf16()
 .EE
diff --git a/man/man3/tomo-Text.from_utf32.3 b/man/man3/tomo-Text.from_utf32.3
index 31fc344f..d93ad2c9 100644
--- a/man/man3/tomo-Text.from_utf32.3
+++ b/man/man3/tomo-Text.from_utf32.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.from_utf32 3 2025-09-09 "Tomo man-pages"
+.TH Text.from_utf32 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.from_utf32 \- convert UTF32 codepoints to text
 .SH LIBRARY
@@ -32,6 +32,5 @@ The text will be normalized, so the resulting text's codepoints may not exactly
 
 .SH EXAMPLES
 .EX
->> Text.from_utf32([197, 107, 101])
-= "Åke"
+assert Text.from_utf32([197, 107, 101]) == "Åke"
 .EE
diff --git a/man/man3/tomo-Text.from_utf8.3 b/man/man3/tomo-Text.from_utf8.3
index ead65dc6..ec5261ec 100644
--- a/man/man3/tomo-Text.from_utf8.3
+++ b/man/man3/tomo-Text.from_utf8.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.from_utf8 3 2025-09-09 "Tomo man-pages"
+.TH Text.from_utf8 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.from_utf8 \- convert UTF8 byte list to text
 .SH LIBRARY
@@ -32,6 +32,5 @@ The text will be normalized, so the resulting text's UTF8 bytes may not exactly
 
 .SH EXAMPLES
 .EX
->> Text.from_utf8([195, 133, 107, 101])
-= "Åke"
+assert Text.from_utf8([195, 133, 107, 101]) == "Åke"
 .EE
diff --git a/man/man3/tomo-Text.has.3 b/man/man3/tomo-Text.has.3
index c9990add..75b6b0c9 100644
--- a/man/man3/tomo-Text.has.3
+++ b/man/man3/tomo-Text.has.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.has 3 2025-04-30 "Tomo man-pages"
+.TH Text.has 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.has \- check for substring
 .SH LIBRARY
@@ -30,8 +30,6 @@ target	Text	The text to search for. 	-
 
 .SH EXAMPLES
 .EX
->> "hello world".has("wo")
-= yes
->> "hello world".has("xxx")
-= no
+assert "hello world".has("wo") == yes
+assert "hello world".has("xxx") == no
 .EE
diff --git a/man/man3/tomo-Text.join.3 b/man/man3/tomo-Text.join.3
index 3552523e..b736f721 100644
--- a/man/man3/tomo-Text.join.3
+++ b/man/man3/tomo-Text.join.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.join 3 2025-04-30 "Tomo man-pages"
+.TH Text.join 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.join \- concatenate with separator
 .SH LIBRARY
@@ -30,6 +30,5 @@ A single `Text` value with the pieces joined by the glue.
 
 .SH EXAMPLES
 .EX
->> ", ".join(["one", "two", "three"])
-= "one, two, three"
+assert ", ".join(["one", "two", "three"]) == "one, two, three"
 .EE
diff --git a/man/man3/tomo-Text.left_pad.3 b/man/man3/tomo-Text.left_pad.3
index 28b1d000..e79e4ad6 100644
--- a/man/man3/tomo-Text.left_pad.3
+++ b/man/man3/tomo-Text.left_pad.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.left_pad 3 2025-04-30 "Tomo man-pages"
+.TH Text.left_pad 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.left_pad \- left-pad text
 .SH LIBRARY
@@ -32,8 +32,6 @@ Text with length at least `width`, with extra padding on the left as needed. If
 
 .SH EXAMPLES
 .EX
->> "x".left_pad(5)
-= "    x"
->> "x".left_pad(5, "ABC")
-= "ABCAx"
+assert "x".left_pad(5) == "    x"
+assert "x".left_pad(5, "ABC") == "ABCAx"
 .EE
diff --git a/man/man3/tomo-Text.lines.3 b/man/man3/tomo-Text.lines.3
index 855abbd8..60aa4430 100644
--- a/man/man3/tomo-Text.lines.3
+++ b/man/man3/tomo-Text.lines.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.lines 3 2025-04-30 "Tomo man-pages"
+.TH Text.lines 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.lines \- get list of lines
 .SH LIBRARY
@@ -29,14 +29,9 @@ A list of substrings resulting from the split.
 
 .SH EXAMPLES
 .EX
->> "one\[rs]ntwo\[rs]nthree".lines()
-= ["one", "two", "three"]
->> "one\[rs]ntwo\[rs]nthree\[rs]n".lines()
-= ["one", "two", "three"]
->> "one\[rs]ntwo\[rs]nthree\[rs]n\[rs]n".lines()
-= ["one", "two", "three", ""]
->> "one\[rs]r\[rs]ntwo\[rs]r\[rs]nthree\[rs]r\[rs]n".lines()
-= ["one", "two", "three"]
->> "".lines()
-= []
+assert "one\[rs]ntwo\[rs]nthree".lines() == ["one", "two", "three"]
+assert "one\[rs]ntwo\[rs]nthree\[rs]n".lines() == ["one", "two", "three"]
+assert "one\[rs]ntwo\[rs]nthree\[rs]n\[rs]n".lines() == ["one", "two", "three", ""]
+assert "one\[rs]r\[rs]ntwo\[rs]r\[rs]nthree\[rs]r\[rs]n".lines() == ["one", "two", "three"]
+assert "".lines() == []
 .EE
diff --git a/man/man3/tomo-Text.lower.3 b/man/man3/tomo-Text.lower.3
index 079fd01b..877227e7 100644
--- a/man/man3/tomo-Text.lower.3
+++ b/man/man3/tomo-Text.lower.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.lower 3 2025-04-30 "Tomo man-pages"
+.TH Text.lower 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.lower \- convert to lowercase
 .SH LIBRARY
@@ -30,9 +30,6 @@ The lowercase version of the text.
 
 .SH EXAMPLES
 .EX
->> "AMÉLIE".lower()
-= "amélie"
-
->> "I".lower(language="tr_TR")
->> "ı"
+assert "AMÉLIE".lower() == "amélie"
+assert "I".lower(language="tr_TR") == "ı"
 .EE
diff --git a/man/man3/tomo-Text.middle_pad.3 b/man/man3/tomo-Text.middle_pad.3
index 815f54f1..8b57bf6e 100644
--- a/man/man3/tomo-Text.middle_pad.3
+++ b/man/man3/tomo-Text.middle_pad.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.middle_pad 3 2025-04-30 "Tomo man-pages"
+.TH Text.middle_pad 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.middle_pad \- pad text, centered
 .SH LIBRARY
@@ -32,8 +32,6 @@ Text with length at least `width`, with extra padding on the left and right as n
 
 .SH EXAMPLES
 .EX
->> "x".middle_pad(6)
-= "  x   "
->> "x".middle_pad(10, "ABC")
-= "ABCAxABCAB"
+assert "x".middle_pad(6) == "  x   "
+assert "x".middle_pad(10, "ABC") == "ABCAxABCAB"
 .EE
diff --git a/man/man3/tomo-Text.quoted.3 b/man/man3/tomo-Text.quoted.3
index 83a40266..8f6824fd 100644
--- a/man/man3/tomo-Text.quoted.3
+++ b/man/man3/tomo-Text.quoted.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.quoted 3 2025-04-30 "Tomo man-pages"
+.TH Text.quoted 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.quoted \- add quotation marks and escapes
 .SH LIBRARY
@@ -31,6 +31,5 @@ The text formatted as a quoted text.
 
 .SH EXAMPLES
 .EX
->> "one\[rs]ntwo".quoted()
-= "\[rs]"one\[rs]\[rs]ntwo\[rs]""
+assert "one\[rs]ntwo".quoted() == "\[rs]"one\[rs]\[rs]ntwo\[rs]""
 .EE
diff --git a/man/man3/tomo-Text.repeat.3 b/man/man3/tomo-Text.repeat.3
index 24effec4..fdc9561f 100644
--- a/man/man3/tomo-Text.repeat.3
+++ b/man/man3/tomo-Text.repeat.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.repeat 3 2025-04-30 "Tomo man-pages"
+.TH Text.repeat 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.repeat \- repeat text
 .SH LIBRARY
@@ -30,6 +30,5 @@ The text repeated the given number of times.
 
 .SH EXAMPLES
 .EX
->> "Abc".repeat(3)
-= "AbcAbcAbc"
+assert "Abc".repeat(3) == "AbcAbcAbc"
 .EE
diff --git a/man/man3/tomo-Text.replace.3 b/man/man3/tomo-Text.replace.3
index 6d4f20b5..7a272106 100644
--- a/man/man3/tomo-Text.replace.3
+++ b/man/man3/tomo-Text.replace.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.replace 3 2025-04-30 "Tomo man-pages"
+.TH Text.replace 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.replace \- replace a substring
 .SH LIBRARY
@@ -31,6 +31,5 @@ The text with occurrences of the target replaced.
 
 .SH EXAMPLES
 .EX
->> "Hello world".replace("world", "there")
-= "Hello there"
+assert "Hello world".replace("world", "there") == "Hello there"
 .EE
diff --git a/man/man3/tomo-Text.reversed.3 b/man/man3/tomo-Text.reversed.3
index c855c909..51b37acb 100644
--- a/man/man3/tomo-Text.reversed.3
+++ b/man/man3/tomo-Text.reversed.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.reversed 3 2025-04-30 "Tomo man-pages"
+.TH Text.reversed 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.reversed \- get a reversed copy
 .SH LIBRARY
@@ -29,6 +29,5 @@ A reversed version of the text.
 
 .SH EXAMPLES
 .EX
->> "Abc".reversed()
-= "cbA"
+assert "Abc".reversed() == "cbA"
 .EE
diff --git a/man/man3/tomo-Text.right_pad.3 b/man/man3/tomo-Text.right_pad.3
index ef0cd189..0fb128cb 100644
--- a/man/man3/tomo-Text.right_pad.3
+++ b/man/man3/tomo-Text.right_pad.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.right_pad 3 2025-04-30 "Tomo man-pages"
+.TH Text.right_pad 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.right_pad \- right-pad text
 .SH LIBRARY
@@ -32,8 +32,6 @@ Text with length at least `width`, with extra padding on the right as needed. If
 
 .SH EXAMPLES
 .EX
->> "x".right_pad(5)
-= "x    "
->> "x".right_pad(5, "ABC")
-= "xABCA"
+assert "x".right_pad(5) == "x    "
+assert "x".right_pad(5, "ABC") == "xABCA"
 .EE
diff --git a/man/man3/tomo-Text.slice.3 b/man/man3/tomo-Text.slice.3
index a716b699..48e0516a 100644
--- a/man/man3/tomo-Text.slice.3
+++ b/man/man3/tomo-Text.slice.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.slice 3 2025-04-30 "Tomo man-pages"
+.TH Text.slice 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.slice \- get a slice of a text
 .SH LIBRARY
@@ -34,12 +34,7 @@ A negative index counts backwards from the end of the text, so `-1` refers to th
 
 .SH EXAMPLES
 .EX
->> "hello".slice(2, 3)
-= "el"
-
->> "hello".slice(to=-2)
-= "hell"
-
->> "hello".slice(from=2)
-= "ello"
+assert "hello".slice(2, 3) == "el"
+assert "hello".slice(to=-2) == "hell"
+assert "hello".slice(from=2) == "ello"
 .EE
diff --git a/man/man3/tomo-Text.split.3 b/man/man3/tomo-Text.split.3
index 5eba316f..8634c509 100644
--- a/man/man3/tomo-Text.split.3
+++ b/man/man3/tomo-Text.split.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.split 3 2025-04-30 "Tomo man-pages"
+.TH Text.split 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.split \- split a text by a delimiter
 .SH LIBRARY
@@ -34,9 +34,6 @@ If an empty text is given as the delimiter, then each split will be the graphica
 
 .SH EXAMPLES
 .EX
->> "one,two,,three".split(",")
-= ["one", "two", "", "three"]
-
->> "abc".split()
-= ["a", "b", "c"]
+assert "one,two,,three".split(",") == ["one", "two", "", "three"]
+assert "abc".split() == ["a", "b", "c"]
 .EE
diff --git a/man/man3/tomo-Text.split_any.3 b/man/man3/tomo-Text.split_any.3
index 7a57433f..6c77d8d6 100644
--- a/man/man3/tomo-Text.split_any.3
+++ b/man/man3/tomo-Text.split_any.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.split_any 3 2025-04-30 "Tomo man-pages"
+.TH Text.split_any 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.split_any \- split a text by multiple delimiters
 .SH LIBRARY
@@ -34,6 +34,5 @@ To split based on an exact delimiter, use Text.split().
 
 .SH EXAMPLES
 .EX
->> "one, two,,three".split_any(", ")
-= ["one", "two", "three"]
+assert "one, two,,three".split_any(", ") == ["one", "two", "three"]
 .EE
diff --git a/man/man3/tomo-Text.starts_with.3 b/man/man3/tomo-Text.starts_with.3
index fafa2a55..ac35fa8d 100644
--- a/man/man3/tomo-Text.starts_with.3
+++ b/man/man3/tomo-Text.starts_with.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.starts_with 3 2025-08-16 "Tomo man-pages"
+.TH Text.starts_with 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.starts_with \- check prefix
 .SH LIBRARY
@@ -31,11 +31,8 @@ remainder	&Text?	If non-none, this value will be set to the rest of the text aft
 
 .SH EXAMPLES
 .EX
->> "hello world".starts_with("hello")
-= yes
+assert "hello world".starts_with("hello") == yes
 remainder : Text
->> "hello world".starts_with("hello", &remainder)
-= yes
->> remainder
-= " world"
+assert "hello world".starts_with("hello", &remainder) == yes
+assert remainder == " world"
 .EE
diff --git a/man/man3/tomo-Text.title.3 b/man/man3/tomo-Text.title.3
index dfdecf21..d1b3e962 100644
--- a/man/man3/tomo-Text.title.3
+++ b/man/man3/tomo-Text.title.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.title 3 2025-04-30 "Tomo man-pages"
+.TH Text.title 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.title \- titlecase
 .SH LIBRARY
@@ -30,10 +30,8 @@ The text in title case.
 
 .SH EXAMPLES
 .EX
->> "amélie".title()
-= "Amélie"
+assert "amélie".title() == "Amélie"
 
 # In Turkish, uppercase "i" is "İ"
->> "i".title(language="tr_TR")
-= "İ"
+assert "i".title(language="tr_TR") == "İ"
 .EE
diff --git a/man/man3/tomo-Text.to.3 b/man/man3/tomo-Text.to.3
index 702698a0..4de082d3 100644
--- a/man/man3/tomo-Text.to.3
+++ b/man/man3/tomo-Text.to.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.to 3 2025-04-30 "Tomo man-pages"
+.TH Text.to 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.to \- slice to an end index
 .SH LIBRARY
@@ -33,9 +33,6 @@ A negative index counts backwards from the end of the text, so `-1` refers to th
 
 .SH EXAMPLES
 .EX
->> "goodbye".to(3)
-= "goo"
-
->> "goodbye".to(-2)
-= "goodby"
+assert "goodbye".to(3) == "goo"
+assert "goodbye".to(-2) == "goodby"
 .EE
diff --git a/man/man3/tomo-Text.trim.3 b/man/man3/tomo-Text.trim.3
index eec1750c..b7daa310 100644
--- a/man/man3/tomo-Text.trim.3
+++ b/man/man3/tomo-Text.trim.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.trim 3 2025-04-30 "Tomo man-pages"
+.TH Text.trim 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.trim \- trim characters
 .SH LIBRARY
@@ -32,12 +32,7 @@ The text without the trim characters at either end.
 
 .SH EXAMPLES
 .EX
->> "   x y z    \[rs]n".trim()
-= "x y z"
-
->> "one,".trim(",")
-= "one"
-
->> "   xyz   ".trim(right=no)
-= "xyz   "
+assert "   x y z    \[rs]n".trim() == "x y z"
+assert "one,".trim(",") == "one"
+assert "   xyz   ".trim(right=no) == "xyz   "
 .EE
diff --git a/man/man3/tomo-Text.upper.3 b/man/man3/tomo-Text.upper.3
index 522702db..dc10ff21 100644
--- a/man/man3/tomo-Text.upper.3
+++ b/man/man3/tomo-Text.upper.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.upper 3 2025-04-30 "Tomo man-pages"
+.TH Text.upper 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.upper \- uppercase
 .SH LIBRARY
@@ -30,10 +30,8 @@ The uppercase version of the text.
 
 .SH EXAMPLES
 .EX
->> "amélie".upper()
-= "AMÉLIE"
+assert "amélie".upper() == "AMÉLIE"
 
 # In Turkish, uppercase "i" is "İ"
->> "i".upper(language="tr_TR")
-= "İ"
+assert "i".upper(language="tr_TR") == "İ"
 .EE
diff --git a/man/man3/tomo-Text.utf16.3 b/man/man3/tomo-Text.utf16.3
index 2b3da2b1..2d5d0817 100644
--- a/man/man3/tomo-Text.utf16.3
+++ b/man/man3/tomo-Text.utf16.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.utf16 3 2025-09-09 "Tomo man-pages"
+.TH Text.utf16 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.utf16 \- get UTF16 codepoints
 .SH LIBRARY
@@ -29,8 +29,6 @@ A list of 16-bit integer Unicode code points (`[Int16]`).
 
 .SH EXAMPLES
 .EX
->> "Åke".utf16()
-= [197, 107, 101]
->> "こんにちは世界".utf16()
-= [12371, 12435, 12395, 12385, 12399, 19990, 30028]
+assert "Åke".utf16() == [197, 107, 101]
+assert "こんにちは世界".utf16() == [12371, 12435, 12395, 12385, 12399, 19990, 30028]
 .EE
diff --git a/man/man3/tomo-Text.utf32.3 b/man/man3/tomo-Text.utf32.3
index ff37ba9c..a74b04d2 100644
--- a/man/man3/tomo-Text.utf32.3
+++ b/man/man3/tomo-Text.utf32.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.utf32 3 2025-09-09 "Tomo man-pages"
+.TH Text.utf32 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.utf32 \- get UTF32 codepoints
 .SH LIBRARY
@@ -29,6 +29,5 @@ A list of 32-bit integer Unicode code points (`[Int32]`).
 
 .SH EXAMPLES
 .EX
->> "Amélie".utf32()
-= [65, 109, 233, 108, 105, 101]
+assert "Amélie".utf32() == [65, 109, 233, 108, 105, 101]
 .EE
diff --git a/man/man3/tomo-Text.utf8.3 b/man/man3/tomo-Text.utf8.3
index 80a91fb9..e64bbaf1 100644
--- a/man/man3/tomo-Text.utf8.3
+++ b/man/man3/tomo-Text.utf8.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.utf8 3 2025-09-09 "Tomo man-pages"
+.TH Text.utf8 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.utf8 \- get UTF8 bytes
 .SH LIBRARY
@@ -29,6 +29,5 @@ A list of bytes (`[Byte]`) representing the text in UTF8 encoding.
 
 .SH EXAMPLES
 .EX
->> "Amélie".utf8()
-= [65, 109, 195, 169, 108, 105, 101]
+assert "Amélie".utf8() == [65, 109, 195, 169, 108, 105, 101]
 .EE
diff --git a/man/man3/tomo-Text.width.3 b/man/man3/tomo-Text.width.3
index 796a4e47..7118c9bb 100644
--- a/man/man3/tomo-Text.width.3
+++ b/man/man3/tomo-Text.width.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.width 3 2025-04-30 "Tomo man-pages"
+.TH Text.width 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.width \- get display width
 .SH LIBRARY
@@ -32,8 +32,6 @@ This will not always be exactly accurate when your terminal's font rendering can
 
 .SH EXAMPLES
 .EX
->> "Amélie".width()
-= 6
->> "🤠".width()
-= 2
+assert "Amélie".width() == 6
+assert "🤠".width() == 2
 .EE
diff --git a/man/man3/tomo-Text.without_prefix.3 b/man/man3/tomo-Text.without_prefix.3
index 34d55ea3..12479791 100644
--- a/man/man3/tomo-Text.without_prefix.3
+++ b/man/man3/tomo-Text.without_prefix.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.without_prefix 3 2025-04-30 "Tomo man-pages"
+.TH Text.without_prefix 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.without_prefix \- remove prefix
 .SH LIBRARY
@@ -30,8 +30,6 @@ A text without the given prefix (if present) or the unmodified text if the prefi
 
 .SH EXAMPLES
 .EX
->> "foo:baz".without_prefix("foo:")
-= "baz"
->> "qux".without_prefix("foo:")
-= "qux"
+assert "foo:baz".without_prefix("foo:") == "baz"
+assert "qux".without_prefix("foo:") == "qux"
 .EE
diff --git a/man/man3/tomo-Text.without_suffix.3 b/man/man3/tomo-Text.without_suffix.3
index d5510b77..45d818a7 100644
--- a/man/man3/tomo-Text.without_suffix.3
+++ b/man/man3/tomo-Text.without_suffix.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH Text.without_suffix 3 2025-04-30 "Tomo man-pages"
+.TH Text.without_suffix 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 Text.without_suffix \- remove suffix
 .SH LIBRARY
@@ -30,8 +30,6 @@ A text without the given suffix (if present) or the unmodified text if the suffi
 
 .SH EXAMPLES
 .EX
->> "baz.foo".without_suffix(".foo")
-= "baz"
->> "qux".without_suffix(".foo")
-= "qux"
+assert "baz.foo".without_suffix(".foo") == "baz"
+assert "qux".without_suffix(".foo") == "qux"
 .EE
diff --git a/man/man3/tomo-ask.3 b/man/man3/tomo-ask.3
index 88aa0964..684efd63 100644
--- a/man/man3/tomo-ask.3
+++ b/man/man3/tomo-ask.3
@@ -2,7 +2,7 @@
 .\" Copyright (c) 2025 Bruce Hill
 .\" All rights reserved.
 .\"
-.TH ask 3 2025-05-17 "Tomo man-pages"
+.TH ask 3 2025-09-21 "Tomo man-pages"
 .SH NAME
 ask \- get user input
 .SH LIBRARY
@@ -34,6 +34,5 @@ When a program is receiving input from a pipe or writing its output to a pipe, t
 
 .SH EXAMPLES
 .EX
->> ask("What's your name? ")
-= "Arthur Dent"
+assert ask("What's your name? ") == "Arthur Dent"
 .EE
author	Bruce Hill <bruce@bruce-hill.com>	2025-09-21 23:23:59 -0400
committer	Bruce Hill <bruce@bruce-hill.com>	2025-09-21 23:23:59 -0400
commit	5824a2ef19879c59866667aced6b3f90e5925648 (patch)
tree	a18ddeadb0c164c7a544b571c3968f86afb759ba
parent	bf067544e98f4085c26161953e301aaa00a904df (diff)