map$ - nodef/extra-object GitHub Wiki

Transform values of an object.

Alternatives: map, map$. Similar: map, reduce, filter, reject.

function map$(x, fm)
// x:  an object (updated)
// fm: map function (v, k, x)
const object = require('extra-object');

var x = {a: 1, b: 2, c: 3, d: 4};
object.map$(x, v => v * 2);
// → { a: 2, b: 4, c: 6, d: 8 }

x;
// → { a: 2, b: 4, c: 6, d: 8 }

References