text: #include <iostream>
  #include <string>
  #include <vector>
  
  int main()
  {
      enum class OrderBookType{bid, ask};
      
      //double price = 5319.450228;
      //double amount = 0.00020075;
      //std::string timestamp{"2020/03/17 17:01:24.884492"};
      //std::string product{"BTC/USDT"};
      //std::string orderType{"bid"};
      //enum class OrderBookType{bid, ask};
      //OrderBookType orderType = OrderBookType::ask;
  
      std::vector<double> prices;
      std::vector<double> amounts;
      std::vector<std::string> timestamps;
      std::vector<std::string> products;
      std::vector<OrderBookType> orderTypes;
  
      prices.push_back(5000.01);
      amounts.push_back(0.001);
      timestamps.push_back("2020/03/17 17:01:24.884492");
      products.push_back("BTC/USDT");
      orderTypes.push_back(OrderBookType::bid);
  
      prices.push_back(5000.03);
      amounts.push_back(0.003);
      timestamps.push_back("2020/03/17 17:01:24.884492");
      products.push_back("BTC/USDT");
      orderTypes.push_back(OrderBookType::bid);
  
      std::cout << "prices: " << prices[0] << std::endl;
      std::cout << "prices: " << prices[1] << std::endl;
  
      return 0;
  }