for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
namespace Underscore\Mutator;
use Underscore\Collection;
use Underscore\Mutator;
class GroupByMutator extends Mutator
{
/**
* Creates an object composed of keys generated from the results
* of running each element of a collection through the callback
*
* @param Collection $collection
* @param callable $iterator
* @return Collection
*/
public function __invoke($collection, $iterator)
$newCollection = [];
foreach ($collection as $value) {
$newCollection[call_user_func($iterator, $value)][] = $value;
}
return $this->copyCollectionWith($collection, $newCollection);
Im0rtality /
Underscore
