Prado\Web\UI\ActiveControls\TScalarDiff::getDifference PHP 메소드

    public function getDifference()
    {
        if (gettype($this->_new) === gettype($this->_old) && $this->_new === $this->_old) {
            return $this->_null;
        } else {
            return $this->_new;
        }
    }