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authorBruce Hill <bruce@bruce-hill.com>2025-01-12 16:49:58 -0500
committerBruce Hill <bruce@bruce-hill.com>2025-01-12 16:49:58 -0500
commit645d66e0de0f201404d9ad4b210f90c139a247ff (patch)
tree08367c3631b928752cde94083bdfe2ae49db0b79 /docs/tables.md
parentb025cf269d2e07e179be4a0e34d936862dc640c2 (diff)
Change table syntax to `{key=value}` and `{:K,V}`/`{K,V}`
Diffstat (limited to 'docs/tables.md')
-rw-r--r--docs/tables.md58
1 files changed, 29 insertions, 29 deletions
diff --git a/docs/tables.md b/docs/tables.md
index a8a2793f..5af26396 100644
--- a/docs/tables.md
+++ b/docs/tables.md
@@ -17,20 +17,20 @@ table := {"A": 10, "B": 20}
Empty tables must specify the key and value types explicitly:
```tomo
-empty := {:Text:Int}
+empty := {:Text,Int}
```
For type annotations, a table that maps keys with type `K` to values of type
-`V` is written as `{K:V}`.
+`V` is written as `{K,V}`.
### Comprehensions
Similar to arrays, tables can use comprehensions to dynamically construct tables:
```tomo
-t := {i: 10*i for i in 10}
-t := {i: 10*i for i in 10 if i mod 2 == 0}
-t := {-1:-10, i: 10*i for i in 10}
+t := {i=10*i for i in 10}
+t := {i=10*i for i in 10 if i mod 2 == 0}
+t := {-1=-10, i=10*i for i in 10}
```
## Accessing Values
@@ -39,7 +39,7 @@ Table values can be accessed with square bracket indexing. The result is an
optional value:
```tomo
-table := {"A": 1, "B": 2}
+table := {"A"=1, "B"=2}
>> table["A"]
= 1 : Int?
>> table["missing"]
@@ -64,8 +64,8 @@ Tables can specify a fallback table that is used when looking up a value if it
is not found in the table itself:
```tomo
-t := {"A": 10}
-t2 := {"B": 20; fallback=t}
+t := {"A"=10}
+t2 := {"B"=20; fallback=t}
>> t2["A"]
= 10 : Int?
```
@@ -75,9 +75,9 @@ table value:
```tomo
>> t2.fallback
-= {"A":10} : {Text:Int}?
+= {"A"=10} : {Text,Int}?
>> t.fallback
-= none : {Text:Int}?
+= none : {Text,Int}?
```
## Setting Values
@@ -86,11 +86,11 @@ You can assign a new key/value mapping or overwrite an existing one using
`:set(key, value)` or an `=` assignment statement:
```tomo
-t := {"A": 1, "B": 2}
+t := {"A"=1, "B"=2}
t["B"] = 222
t["C"] = 333
>> t
-= {"A":1, "B":222, "C":333}
+= {"A"=1, "B"=222, "C"=333}
```
## Length
@@ -98,7 +98,7 @@ t["C"] = 333
Table length can be accessed by the `.length` field:
```tomo
->> {"A":10, "B":20}.length
+>> {"A"=10, "B"=20}.length
= 2
```
@@ -108,7 +108,7 @@ The keys and values of a table can be efficiently accessed as arrays using a
constant-time immutable slice of the internal data from the table:
```tomo
-t := {"A": 10, "B": 20}
+t := {"A"=10, "B"=20}
>> t.keys
= ["A", "B"]
>> t.values
@@ -141,7 +141,7 @@ not already in the table, its value will be assumed to be zero.
**Signature:**
```tomo
-func bump(t:@{K:V}, key: K, amount: Int = 1 -> Void)
+func bump(t:@{K,V}, key: K, amount: Int = 1 -> Void)
```
**Parameters:**
@@ -155,11 +155,11 @@ Nothing.
**Example:**
```tomo
->> t := {"A":1}
+>> t := {"A"=1}
t:bump("A")
t:bump("B", 10)
>> t
-= {"A": 2, "B": 10}
+= {"A"=2, "B"=10}
```
---
@@ -171,7 +171,7 @@ Removes all key-value pairs from the table.
**Signature:**
```tomo
-func clear(t:@{K:V})
+func clear(t:@{K,V})
```
**Parameters:**
@@ -195,7 +195,7 @@ Retrieves the value associated with a key, or returns null if the key is not pre
**Signature:**
```tomo
-func get(t:{K:V}, key: K -> V?)
+func get(t:{K,V}, key: K -> V?)
```
**Parameters:**
@@ -208,7 +208,7 @@ The value associated with the key or null if the key is not found.
**Example:**
```tomo
->> t := {"A":1, "B":2}
+>> t := {"A"=1, "B"=2}
>> t:get("A")
= 1 : Int?
@@ -231,7 +231,7 @@ Checks if the table contains a specified key.
**Signature:**
```tomo
-func has(t:{K:V}, key: K -> Bool)
+func has(t:{K,V}, key: K -> Bool)
```
**Parameters:**
@@ -244,9 +244,9 @@ func has(t:{K:V}, key: K -> Bool)
**Example:**
```tomo
->> {"A":1, "B":2}:has("A")
+>> {"A"=1, "B"=2}:has("A")
= yes
->> {"A":1, "B":2}:has("xxx")
+>> {"A"=1, "B"=2}:has("xxx")
= no
```
@@ -259,7 +259,7 @@ Removes the key-value pair associated with a specified key.
**Signature:**
```tomo
-func remove(t:{K:V}, key: K -> Void)
+func remove(t:{K,V}, key: K -> Void)
```
**Parameters:**
@@ -272,10 +272,10 @@ Nothing.
**Example:**
```tomo
-t := {"A":1, "B":2}
+t := {"A"=1, "B"=2}
t:remove("A")
>> t
-= {"B": 2}
+= {"B"=2}
```
---
@@ -287,7 +287,7 @@ Sets or updates the value associated with a specified key.
**Signature:**
```tomo
-func set(t:{K:V}, key: K, value: V -> Void)
+func set(t:{K,V}, key: K, value: V -> Void)
```
**Parameters:**
@@ -301,8 +301,8 @@ Nothing.
**Example:**
```tomo
-t := {"A": 1, "B": 2}
+t := {"A"=1, "B"=2}
t:set("C", 3)
>> t
-= {"A": 1, "B": 2, "C": 3}
+= {"A"=1, "B"=2, "C"=3}
```