copy

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Subhajit Sahu edited this page May 19, 2020 · 24 revisions

Copies part of array to another. 🏃 📼 📦 🌔 📒

Alternatives: [copy], [copy$].
Similar: [copy], [copyWithin].

array.copy(x, y, [j], [i], [I]);
// x: target array
// y: source array
// j: write index (0)
// i: read start index (0)
// I: read end index (end)

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

var x = [1, 2, 3, 4, 5];
var y = [10, 20, 30];
array.copy(x, y);
// [ 10, 20, 30, 4, 5 ]

array.copy(x, y, 1);
// [ 1, 10, 20, 30, 5 ]

array.copy(x, y, 1, 1);
// [ 1, 20, 30, 4, 5 ]

array.copy(x, y, 1, 1, 2);
// [ 1, 20, 3, 4, 5 ]

references