bbujisic/functional

Yet another take on functional primitives for PHP

dev-master 2018-11-21 10:40 UTC

Requires (Dev)

• php-coveralls/php-coveralls: ^2.1
• phpunit/phpunit: ^7

MIT

• Branislav Bujisic

• functional

README

Nothing special. It just adds a little bit of syntactic sugar for more expressive code.

Example

<?php

use bbujisic\functional\Collection;

$collection = new Collection([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);

$sumSquaresOfOddItems = $collection
  ->filter(function ($x) { return $x % 2 == 0; })
  ->map(function ($x) { return $x * $x; })
  ->reduce(function($x, $y) { return $x + $y; });

Comparable imperative-style programming would perform a wee bit better, at a cost of lesser readability:

<?php

$collection = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
$sumSquaresOfOddItems = 0;
foreach ($collection as $item) {
  if ($item % 2 == 0) {
    $sumSquaresOfOddItems += $item * $item;
  }
}