deno.land / std@0.166.0 / collections / chunk.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
40
41
42
43
44
45
46
47
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Splits the given array into chunks of the given size and returns them * * Example: * * ```ts * import { chunk } from "https://deno.land/std@$STD_VERSION/collections/chunk.ts"; * import { assertEquals } from "https://deno.land/std@$STD_VERSION/testing/asserts.ts"; * * const words = [ 'lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consetetur', 'sadipscing' ] * const chunks = chunk(words, 3) * * assertEquals(chunks, [ * [ 'lorem', 'ipsum', 'dolor' ], * [ 'sit', 'amet', 'consetetur' ], * [ 'sadipscing' ], * ]) * ``` */export function chunk<T>(array: readonly T[], size: number): T[][] { if (size <= 0 || !Number.isInteger(size)) { throw new Error( `Expected size to be an integer greater than 0 but found ${size}`, ); }
if (array.length === 0) { return []; }
const ret = Array.from<T[]>({ length: Math.ceil(array.length / size) }); let readIndex = 0; let writeIndex = 0;
while (readIndex < array.length) { ret[writeIndex] = array.slice(readIndex, readIndex + size);
writeIndex += 1; readIndex += size; }
return ret;}
std
Deno standard library
GitHub Repositorydenoland/deno_std
GitHub Stars
2458

Version Info

Tagged at
2 months ago