map

Updates values based on map function. 🏃 📼 📦 🌔

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

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

var x = [1, 2, 3, 4];
[...iterable.map(x, v => v * 2)];
// [ 2, 4, 6, 8 ]

references

• Data.List.map: Haskell
• Array.prototype.map: MDN web docs
• array_map: PHP