all

Check if all elements satisfy a condition.

Usage

import { all } from 'js-cool'

Signature

function all<T>(arr: T[], fn: (item: T) => boolean): boolean

Parameters

Parameter	Type	Description
arr	T[]	The array to check
fn	(item: T) => boolean	The test function

Returns

boolean - true if all elements pass the test.

Examples

all([1, 2, 3], x => x > 0) // true
all([1, 2, 3], x => x > 1) // false
all([], x => x > 0) // true

Related

• any - Check if any element passes