public function sum(){
		
		Number::setScale(static::NUMERIC_FUNCTIONS_SCALE);
		
		$total = '0';
		
		foreach($this->_Arr as $item){
			$total = Number::add($total, \strval($item));
		}
		
		return $total;
		
	}
public function sum(){
		
		Number::setScale(static::NUMERIC_FUNCTIONS_SCALE);
		
		$total = '0';
		
		foreach($this->_Arr as $item){
			$total = Number::add($total, \strval($item));
		}
		
		return $total;
		
	}
public function sum ( ) { Number :: setScale ( static :: NUMERIC_FUNCTIONS_SCALE ) ; $ total = '0' ; foreach ( $ this -> _Arr as $ item ) { $ total = Number :: add ( $ total , \ strval ( $ item ) ) ; } return $ total ; }
Computes the sum of all numbers in this list
@return string
Computes the sum of all numbers in this list