@extra-array/map-update

Updates values based on map function. 📦 😺 🏃 📼 🌔 📜 📰 📘

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

This is part of package extra-array.

array.map$(x, fm);
// x:  an array (updated)
// fm: map function (v, i, x)
// → x

const array = require("extra-array");

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

x;
// [ 2, 4, 6, 8 ]

References

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