union

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Subhajit Sahu edited this page May 9, 2020 · 29 revisions

Gives values present in any iterable. 🏃 📼 📦 🌔

Alternatives: compare, map.

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

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

var x = [1, 2, 3, 4];
var y = [2, 3, 5];
[...iterable.union(x, y)];
// [1, 2, 3, 4, 5]

var y = [-2, -3, -5];
[...iterable.union(x, y, (a, b) => Math.abs(a) - Math.abs(b))];
// [1, 2, 3, 4, -5]

references