@extra-array/swap-update

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

> Alternatives: [swap], [swap$].

> This is part of package [extra-array].

[extra-array]: https://www.npmjs.com/package/extra-array

``javascript
array.swap$(x, i, j);
// x: an array (updated)
// i: an index
// j: another index
// → x
`

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

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

x;
// [ 2, 1, 3, 4 ]

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

References

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

[swap]: https://github.com/nodef/extra-array/wiki/swap
[swap$]: https://github.com/nodef/extra-array/wiki/swap$