swap - nodef/extra-object GitHub Wiki

Exchange two values in an object.

Alternatives: swap, swap$. Similar: get, set, swap, remove.

function swap(x, k, l)
// x: an object
// k: a key
// l: another key

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

var x = {a: 1, b: 2, c: 3, d: 4};
object.swap(x, 'a', 'b');
// → { a: 2, b: 1, c: 3, d: 4 }

object.swap(x, 'a', 'd');
// → { a: 4, b: 2, c: 3, d: 1 }

References