deno.land / std@0.157.0 / collections / associate_with.ts

associate_with.ts
نووسراو ببینە
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Builds a new Record using the given array as keys and choosing a value for each * key using the given selector. If any of two pairs would have the same value * the latest on will be used (overriding the ones before it). * * Example: * * ```ts * import { associateWith } from "https://deno.land/std@$STD_VERSION/collections/associate_with.ts" * import { assertEquals } from "https://deno.land/std@$STD_VERSION/testing/asserts.ts"; * * const names = [ 'Kim', 'Lara', 'Jonathan' ] * const namesToLength = associateWith(names, it => it.length) * * assertEquals(namesToLength, { * 'Kim': 3, * 'Lara': 4, * 'Jonathan': 8, * }) * ``` */export function associateWith<T>( array: readonly string[], selector: (key: string) => T,): Record<string, T> { const ret: Record<string, T> = {};
for (const element of array) { const selectedValue = selector(element);
ret[element] = selectedValue; }
return ret;}
std

Version Info

Tagged at
a year ago