group

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Subhajit Sahu edited this page Feb 3, 2021 · 26 revisions

Keep similar values together and in order.

Similar: cut, split, group.

function group(x, fc, fm)
// x:  an iterable
// fc: compare function (a, b)
// fm: map function (v, i, x)

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

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

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

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

References