Exchanges two values. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Alternatives: swap, swap$.

This is part of package extra-array.

This is browserified, minified version of @extra-array/swap. It is exported as global variable array_swap. CDN: unpkg, jsDelivr.

array.swap(x, i, j);
// x: an array
// i: an index
// j: another index

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

var x = [1, 2, 3, 4];
array.swap(x, 0, 1);
// [ 2, 1, 3, 4 ]

array.swap(x, 0, 3);
// [ 4, 2, 3, 1 ]

References

• List-Extra.swapAt: elm
• Collections.swap: Java
• pure-swap: @alferov