crossRT

function chunk(array, size) {
  return array.reduce(function (res, item, index) {
    if (index % size === 0) {
      res.push([]);
    }
    res[res.length - 1].push(item);
    return res;
  }, []);
}

crossRT

trait HasEnums
{
    /**
     * The array of enumerators of a given group.
     *
     * @param null|string $group
     * @return array
     */
    static function enums($group = null)
    {