map

Transform values of entries.

Similar: map, reduce, filter, filterAt, reject, rejectAt.

function map(x, fm)
// x:  lists
// fm: map function (v, k, x)

const xlists = require('extra-lists');

var x = [['a', 'b', 'c', 'd'], [1, 2, 3, 4]];
xlists.map(x, v => v * 2);
// → [ [ 'a', 'b', 'c', 'd' ], [ 2, 4, 6, 8 ] ]

References

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