/**
* Randomly re-order values. This operation does not preserve keys.
*
* Examples
*
* Crankshaft::Iter([1, 2, 3, 4])->shuffle()->to_array()
* // => [3, 2, 1, 4] // or something entirely else
*
* Returns an Iterable.
*/
public function shuffle()
{
$values = $this->to_array();
shuffle($values);
return Crankshaft::Iter($values);
}
