map$

Updates values based on map function. 🏃 📼 📦 🌔 📒

Alternatives: [map], [map$].
Similar: [map], [reduce], [filter], [filterAt], [reject], [rejectAt].

array.map(x, fn, [ths]);
// x:   an array
// fn:  map function (v, i, x)
// ths: this argument

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