squiggle/packages/website/docs/Api/Dictionary.md

---
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}
```