copy$ (original) (raw)
Copy part of array to another!
Alternatives: copy, copy$.
Similar: copy, copyWithin, moveWithin.
function copy$(x, y, j, i, I) // x: target array (updated!) // y: source array // j: write index [0] // i: read begin index [0] // I: read end index [|x|]
const xarray = require('extra-array');
var x = [1, 2, 3, 4, 5]; var y = [10, 20, 30]; xarray.copy$(x, y); // → [ 10, 20, 30, 4, 5 ]
x; // → [ 10, 20, 30, 4, 5 ]
var x = [1, 2, 3, 4, 5]; xarray.copy$(x, y, 1); // → [ 1, 10, 20, 30, 5 ]
var x = [1, 2, 3, 4, 5]; xarray.copy$(x, y, 1, 1); // → [ 1, 20, 30, 4, 5 ]
var x = [1, 2, 3, 4, 5]; xarray.copy$(x, y, 1, 1, 2); // → [ 1, 20, 3, 4, 5 ]