gleam_javascript - v0.11.0

gleam/javascript/map

Types

Map

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The JavaScript Map type, a mutable collection of keys and values.

Most the time you should use the Dict type from gleam/dict in the Gleam standard library. This type may still be useful for JavaScript interop.

For further information view the MDN documentation: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map

pub type Map(key, value)

Functions

get

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pub fn get(a: Map(a, b), b: a) -> Result(b, Nil)

Get the value for a given key in the Map.

new

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pub fn new() -> Map(a, b)

Create a new Map with no contained values.

set

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pub fn set(a: Map(a, b), b: a, c: b) -> Map(a, b)

Insert a new key and value into the Map.

NOTE: This function will mutate the Map rather than immutably updating it.

size

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pub fn size(a: Map(a, b)) -> Int

Get the number of key-value pairs in the Map.

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