map.md

map

Description

Apply a function over all the items of a collection and returns an array with the results keeping the original indexes. You can use the key as the second argument.

Parameters

fn

Function to apply to every item in the collection.

coll

Collection of values to apply the function.

Examples

A multiplier:

<?php

use function Lambdish\Phunctional\map;

return map(
    function ($value) {
        return $value * 2;
    }, 
    [1, 2, 3, 4, 5]
);
            
// => [2, 4, 6, 8, 10]