squiggle/packages/website/docs/Api/Dictionary.md
2022-06-11 08:57:02 -07:00

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---
sidebar_position: 2
title: Dictionary
---
### toList
```
Dict.toList: (dict<'a>) => list<list<string|a>>
```
```js
Dict.toList({ foo: 3, bar: 20 }); // [["foo", 3], ["bar", 20]]
```
### fromList
```
Dict.fromList: (list<list<string|'a>>) => dict<'a>
```
```js
Dict.fromList([
["foo", 3],
["bar", 20],
]); // {foo: 3, bar: 20}
```
### keys
```
Dict.keys: (dict<'a>) => list<string>
```
```js
Dict.keys({ foo: 3, bar: 20 }); // ["foo", "bar"]
```
### values
```
Dict.values: (dict<'a>) => list<'a>
```
```js
Dict.values({ foo: 3, bar: 20 }); // [3, 20]
```
### merge
```
Dict.merge: (dict<'a>, dict<'b>) => dict<'a|b>
```
```js
first = { a: 1, b: 2 };
snd = { b: 3, c: 5 };
Dict.merge(first, snd); // {a: 1, b: 3, c: 5}
```
### mergeMany
```
Dict.mergeMany: (list<dict<'a>>) => dict<'a>
```
```js
first = { a: 1, b: 2 };
snd = { b: 3, c: 5 };
Dict.mergeMany([first, snd]); // {a: 1, b: 3, c: 5}
```