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-# Sets
-
-Sets represent an unordered collection of unique elements. These are
-implemented using hash tables.
-
-```tomo
-a := {10, 20, 30}
-b := {20, 30}
->> a:overlap(b)
-= {20}
-```
-
-## Syntax
-
-Sets are written using `{}` curly braces with comma-separated items:
-
-```tomo
-nums := {10, 20, 30}
-```
-
-Empty sets must specify the item type explicitly:
-
-```tomo
-empty := {:Int}
-```
-
-For type annotations, a set that holds items with type `T` is written as `{T}`.
-
-### Comprehensions
-
-Similar to arrays, sets can use comprehensions:
-
-```tomo
-set := {10*i for i in 10}
-set2 := {10*i for i in 10 if i mod 2 == 0}
-set3 := {-10, 10*i for i in 10}
-```
-
-## Accessing Items
-
-Sets internally store their items in an array, which you can access with the
-`.items` field. This is a constant-time operation that produces an immutable
-view:
-
-```tomo
-set := {10, 20, 30}
->> set.items
-= [10, 20, 30]
-```
-
-## Length
-
-Set length can be accessed by the `.length` field:
-
-```tomo
->> {10, 20, 30}.length
-= 3
-```
-
-## Iteration
-
-You can iterate over the items in a table like this:
-
-```tomo
-for item in set:
-    ...
-
-for i, item in set:
-    ...
-```
-
-Set iteration operates over the value of the set when the loop began, so
-modifying the set during iteration is safe and will not result in the loop
-iterating over any of the new values.
-
-## Set Methods
-
-### `has`
-
-**Description:**  
-Checks if the set contains a specified item.
-
-**Usage:**  
-```tomo
-has(set:{T}, item:T) -> Bool
-```
-
-**Parameters:**
-
-- `set`: The set to check.
-- `item`: The item to check for presence.
-
-**Returns:**  
-`yes` if the item is present, `no` otherwise.
-
-**Example:**  
-```tomo
->> {10, 20}:has(20)
-= yes
-```
-
----
-
-### `add`
-
-**Description:**  
-Adds an item to the set.
-
-**Usage:**  
-```tomo
-add(set:{T}, item: T) -> Void
-```
-
-**Parameters:**
-
-- `set`: The mutable reference to the set.
-- `item`: The item to add to the set.
-
-**Returns:**  
-Nothing.
-
-**Example:**  
-```tomo
->> nums:add(42)
-```
-
----
-
-### `add_all`
-
-**Description:**  
-Adds multiple items to the set.
-
-**Usage:**  
-```tomo
-add_all(set:&{T}, items: [T]) -> Void
-```
-
-**Parameters:**
-
-- `set`: The mutable reference to the set.
-- `items`: The array of items to add to the set.
-
-**Returns:**  
-Nothing.
-
-**Example:**  
-```tomo
->> nums:add_all([1, 2, 3])
-```
-
----
-
-### `remove`
-
-**Description:**  
-Removes an item from the set.
-
-**Usage:**  
-```tomo
-remove(set:&{T}, item: T) -> Void
-```
-
-**Parameters:**
-
-- `set`: The mutable reference to the set.
-- `item`: The item to remove from the set.
-
-**Returns:**  
-Nothing.
-
-**Example:**  
-```tomo
->> nums:remove(42)
-```
-
----
-
-### `remove_all`
-
-**Description:**  
-Removes multiple items from the set.
-
-**Usage:**  
-```tomo
-remove_all(set:&{T}, items: [T]) -> Void
-```
-
-**Parameters:**
-
-- `set`: The mutable reference to the set.
-- `items`: The array of items to remove from the set.
-
-**Returns:**  
-Nothing.
-
-**Example:**  
-```tomo
->> nums:remove_all([1, 2, 3])
-```
-
----
-
-### `clear`
-
-**Description:**  
-Removes all items from the set.
-
-**Usage:**  
-```tomo
-clear(set:&{T}) -> Void
-```
-
-**Parameters:**
-
-- `set`: The mutable reference to the set.
-
-**Returns:**  
-Nothing.
-
-**Example:**  
-```tomo
->> nums:clear()
-```
-
----
-
-### `with`
-
-**Description:**  
-Creates a new set that is the union of the original set and another set.
-
-**Usage:**  
-```tomo
-with(set:{T}, other: {T}) -> {T}
-```
-
-**Parameters:**
-
-- `set`: The original set.
-- `other`: The set to union with.
-
-**Returns:**  
-A new set containing all items from both sets.
-
-**Example:**  
-```tomo
->> {1, 2}:with({2, 3})
-= {1, 2, 3}
-```
-
----
-
-### `overlap`
-
-**Description:**  
-Creates a new set with items that are in both the original set and another set.
-
-**Usage:**  
-```tomo
-overlap(set:{T}, other: {T}) -> {T}
-```
-
-**Parameters:**
-
-- `set`: The original set.
-- `other`: The set to intersect with.
-
-**Returns:**  
-A new set containing only items present in both sets.
-
-**Example:**  
-```tomo
->> {1, 2}:overlap({2, 3})
-= {2}
-```
-
----
-
-### `without`
-
-**Description:**  
-Creates a new set with items from the original set but without items from another set.
-
-**Usage:**  
-```tomo
-without(set:{T}, other: {T}) -> {T}
-```
-
-**Parameters:**
-
-- `set`: The original set.
-- `other`: The set of items to remove from the original set.
-
-**Returns:**  
-A new set containing items from the original set excluding those in the other set.
-
-**Example:**  
-```tomo
->> {1, 2}:without({2, 3})
-= {1}
-```
-
----
-
-### `is_subset_of`
-
-**Description:**  
-Checks if the set is a subset of another set.
-
-**Usage:**  
-```tomo
-set:is_subset_of(other: {T}, strict: Bool = no) -> Bool
-```
-
-**Parameters:**
-
-- `set`: The set to check.
-- `other`: The set to compare against.
-- `strict`: If `yes`, checks if the set is a strict subset (does not equal the other set).
-
-**Returns:**  
-`yes` if the set is a subset of the other set (strictly or not), `no` otherwise.
-
-**Example:**  
-```tomo
->> {1, 2}:is_subset_of({1, 2, 3})
-= yes
-```
-
----
-
-### `is_superset_of`
-
-**Description:**  
-Checks if the set is a superset of another set.
-
-**Usage:**  
-```tomo
-is_superset_of(set:{T}, other: {T}, strict: Bool = no) -> Bool
-```
-
-**Parameters:**
-
-- `set`: The set to check.
-- `other`: The set to compare against.
-- `strict`: If `yes`, checks if the set is a strict superset (does not equal the other set).
-
-**Returns:**  
-`yes` if the set is a superset of the other set (strictly or not), `no` otherwise.
-
-**Example:**  
-```tomo
->> {1, 2, 3}:is_superset_of({1, 2})
-= yes
-```