group

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Subhajit Sahu edited this page May 19, 2020 · 25 revisions

Breaks array keeping similar values together. 🏃 📼 📦 🌔

Alternatives: compare, map.

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

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

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

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

array.group(x, null, v => Math.abs(v));
// [ [ 1 ], [ 2, 2, -2, -2 ], [ 4 ] ]

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