public static function index($list, $value) { if (!$list instanceof SassList) { $list = new SassList($list->toString()); } return $list->index($value); }
public static function append($list, $val, $sep = ', ') { if ($list instanceof SassString) { $list = new SassList($list->toString()); } $list->append($val, $sep); return $list; }