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copyWithin
Subhajit Sahu edited this page Feb 2, 2021
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27 revisions
Copies part of array within. 📦 😺 🏃 📼 🌔 📜 📰 📘
Alternatives: copyWithin, copyWithin$.
Similar: copy, copyWithin, moveWithin.
array.copyWithin(x, [j], [i], [I]);
// x: an array
// j: write index (0)
// i: read start index (0)
// I: read end index (X)const array = require("extra-array");
var x = [1, 2, 3, 4, 5];
array.copyWithin(x, 3);
// [ 1, 2, 3, 1, 2 ]
array.copyWithin(x, 3, 1);
// [ 1, 2, 3, 2, 3 ]
array.copyWithin(x, 3, 1, 2);
// [ 1, 2, 3, 2, 5 ]