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C++17 in Detail: A Deep Dive

The OrderRecord Class

Explore how the OrderRecord class transforms each CSV line into a structured object by splitting columns and converting elements with C++17 utilities. Understand the use of std::from_chars for error-checked conversion and how these steps support parallel CSV data processing for improved performance.

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The main class that is used to compute results is OrderRecord. It’s a direct representation of a line from a CSV file.

C++
class OrderRecord
{
  public:
  // constructors...
  double CalcRecordPrice() const noexcept;
  bool CheckDate(const Date& start, const Date& end) const noexcept;
  private:
  Date mDate;
  std::string mCouponCode;
  double mUnitPrice{ 0.0 };
  double mDiscount{ 0.0 }; // 0... 1.0
  unsigned int mQuantity{ 0 };
};

The conversion

Once we ...