map$

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

• Data.List.map: Haskell
• Array.prototype.map: MDN web docs
• array_map: PHP
• Array.map: sugarjs
• filter-collection: @dimd13