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@std/collections@0.215.0

latest
Works with
It is unknown whether this package works with Node.js, Deno, Browsers, Cloudflare Workers, Bun
It is unknown whether this package works with Node.js
It is unknown whether this package works with Deno
It is unknown whether this package works with Browsers
It is unknown whether this package works with Cloudflare Workers
It is unknown whether this package works with Bun
•JSR Score70%•
Downloads1/wk
•
Published2 years ago (0.215.0)
function partition
partition<T>(
array: Iterable<T>,
predicate: (el: T) => boolean
): [T[], T[]]

Returns a tuple of two arrays with the first one containing all elements in the given array that match the given predicate and the second one containing all that do not.

Examples

Example 1

import { partition } from "@std/collections/partition";
import { assertEquals } from "@std/assert/assert_equals";

const numbers = [5, 6, 7, 8, 9];
const [even, odd] = partition(numbers, (it) => it % 2 === 0);

assertEquals(even, [6, 8]);
assertEquals(odd, [5, 7, 9]);

Type Parameters

T

Parameters

array: Iterable<T>
predicate: (el: T) => boolean

Return Type

[T[], T[]]
partition<T, U extends T>(
array: Iterable<T>,
predicate: (el: T) => el is U
): [U[], Exclude<T, U>[]]

Returns a tuple of two arrays with the first one containing all elements in the given array that match the given predicate and the second one containing all that do not.

Examples

Example 1

import { partition } from "@std/collections/partition";
import { assertEquals } from "@std/assert/assert_equals";

const numbers = [5, 6, 7, 8, 9];
const [even, odd] = partition(numbers, (it) => it % 2 === 0);

assertEquals(even, [6, 8]);
assertEquals(odd, [5, 7, 9]);

Type Parameters

T
U extends T

Parameters

array: Iterable<T>
predicate: (el: T) => el is U

Return Type

[U[], Exclude<T, U>[]]

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Add Package

deno add jsr:@std/collections

Import symbol

import { partition } from "@std/collections";
or

Import directly with a jsr specifier

import { partition } from "jsr:@std/collections";