group

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Subhajit Sahu edited this page May 9, 2020 · 26 revisions

Keeps similar values together and in order. 🏃 📼 📦 🌔

Alternatives: compare, map.

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

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

var x = [1, 2, 2, -2, -2, 4];
[...iterable.group(x)];
// [[1], [2, 2], [-2, -2], [4]]

[...iterable.group(x, (a, b) => Math.abs(a) - Math.abs(b))];
// [[1], [2, 2, -2, -2], [4]]

references