Data(std::vector<double> vector_param, plp::Date *date_param);
Data(std::valarray<double> value_arr_param, plp::Date *date_param);
virtual ~Data();
Data(std::vector<double> vector_param, plp::Date *date_param);
Data(std::valarray<double> value_arr_param, plp::Date *date_param);
virtual ~Data();