map

Transform values of an iterable.

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

function map(x, fm)
// x:  an iterable
// fm: map function (v, i, x)

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

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

References

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