findLast | /collections/find_last.ts | std@0.107.0

Module

std/collections/find_last.ts>findLast

Deno standard library

denoland/deno_std

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mod.ts (default module)

first_not_nullish_of.ts

The Standard Library has been moved to JSR. See the blog post for details.

function findLast

import { findLast } from "https://deno.land/std@0.107.0/collections/find_last.ts";

findLast<T>(array: readonly T[], predicate: (el: T) => boolean): T | undefined

Returns the last element in the given array matching the given predicate

Example:

import { findLast } from "https://deno.land/std@0.107.0/collections/mod.ts";
import { assertEquals } from "https://deno.land/std@0.107.0/testing/asserts.ts";

const numbers = [ 4, 2, 7 ]
const lastEvenNumber = findLast(numbers, it => it % 2 === 0)

assertEquals(lastEvenNumber, 2)

Type Parameters

Parameters

array: readonly T[]

predicate: (el: T) => boolean

Returns

T | undefined