isUnique

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Subhajit Sahu edited this page May 10, 2020 · 23 revisions

Checks if there are no duplicate values. 🏃 📼 📦 🌔

Alternatives: compare, map.

iterable.isUnique(x, [fn]);
// x:  an iterable
// fn: compare function (a, b)

const iterable = require('extra-iterable');

var x = [1, 2, -1, -2];
iterable.isUnique(x);
// true

iterable.isUnique(x, (a, b) => Math.abs(a) - Math.abs(b));
// false

references