copy

Copies part of iterable to another. 🏃 📼 📦 🌔

Similar: within, another.

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

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

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

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

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

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

references

• Collections.copy(): Java
• Array.prototype.copyWithin(): MDN web docs