Module

std/collections/take_while.ts>takeWhile

Deno standard library
denoland/deno_std
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function takeWhile
import { takeWhile } from "https://dotland.deno.dev/std@0.181.0/collections/take_while.ts";

Returns all elements in the given collection until the first element that does not match the given predicate.

Examples

Example 1

import { takeWhile } from "https://deno.land/std@0.181.0/collections/take_while.ts";
import { assertEquals } from "https://deno.land/std@0.181.0/testing/asserts.ts";

const arr = [1, 2, 3, 4, 5, 6];

assertEquals(
  takeWhile(arr, (i) => i !== 4),
  [1, 2, 3],
);

Parameters

array: readonly T[]
predicate: (el: T) => boolean