Fusonic\Linq\Linq::groupBy PHP 메소드

Groups the object according to the $func generated key

public groupBy ( callable $keySelector ) : Fusonic\Linq\GroupedLinq
$keySelector	callable	a func that returns an item as key, item can be any type.
리턴	Fusonic\Linq\GroupedLinq

    public function groupBy(callable $keySelector)
    {
        return new Linq(new GroupIterator($this->iterator, $keySelector));
    }

Linq