Z31o_0
11/12/2019 - 9:24 AM

All

This snippet returns true if the predicate function returns true for all elements in a collection and false otherwise. You can omit the second argument fn if you want to use Boolean as a default value.

all.js
content_copyfile_download
const all = (arr, fn = Boolean) => arr.every(fn);

all([4, 2, 3], x => x > 1); // true
all([1, 2, 3]); // true