public function sort(\Closure $compare = null){
		
		if($this->_ReadOnly){
			throw new ReadOnlyException(\get_called_class() . ' is read only');
		}
		
		if(\is_callable($compare)){
			\usort($this->_Arr, $compare);
		}
		else{
			\sort($this->_Arr);
		}
		
		return $this;
		
	}