template<typename T>
typename std::enable_if<std::_Is_numeric<T>::value,T>::type
getValue()
{
	switch(_valueDataType)
	{
		case ValueDataType::BOOLEAN_TYPE:
			if (_value == "true") {
				return (T)true;
			} else {
				return (T)false;
			}
			break;
		case ValueDataType::INTEGER_TYPE:
			return (T)atoi(_value.c_str());
			break;
		case ValueDataType::DOUBLE_TYPE:
			return (T)atof(_value.c_str());
			break;
	}
	return 0;
}

string getValueAsString()
{
	return _value;
}



// Calling it

string s;
int a;
bool b;
double c;

case ValueDataType::STRING_TYPE:
	s = iter->second.getValueAsString();
	break;
case ValueDataType::INTEGER_TYPE:
	a = iter->second.getValue<int>();
	break;
case ValueDataType::BOOLEAN_TYPE:
	b = iter->second.getValue<bool>();
	break;
case ValueDataType::DOUBLE_TYPE:
	c = iter->second.getValue<double>();
	break;