Class Initializer checking for certain input

Question

I have a Class in a header file and I am trying to implement the initializing given a certain input. So my header file excluding headers looks something like this:

class Card {
public:
  // rank and suit names
  static constexpr const char* const RANK_TWO = "Two";
  static constexpr const char* const RANK_THREE = "Three";
  static constexpr const char* const RANK_FOUR = "Four";
  static constexpr const char* const RANK_FIVE = "Five";
  static constexpr const char* const RANK_SIX = "Six";
  static constexpr const char* const RANK_SEVEN = "Seven";
  static constexpr const char* const RANK_EIGHT = "Eight";
  static constexpr const char* const RANK_NINE = "Nine";
  static constexpr const char* const RANK_TEN = "Ten";

  static constexpr const char* const SUIT_SPADES = "Spades";
  static constexpr const char* const SUIT_HEARTS = "Hearts";
  static constexpr const char* const SUIT_CLUBS = "Clubs";
  static constexpr const char* const SUIT_DIAMONDS = "Diamonds";

Card();

Card(const std::string &rank_in, const std::string &suit_in);

private:
  std::string rank;
  std::string suit;
};

For the implementation of the second initializer I have this so far.

Card::Card(const std::string &rank_in, const std::string &suit_in){

    this->rank = rank_in;
    this->suit = suit_in;
}

To check if my rank_in and suit_in match one of the variables inside the class, do I need to check each one individually or is there a way to do this more efficiently? Thanks in advance the help is much appreciated

Answer 1

or is there a way to do this more efficiently?

yes, you can explode the new c++11 features:

class K 
{
    public:
        enum class R
        {
            TWO,
            THREE,
            FOUR
        };
        enum class Su
        {
            S,
            H,
            C,
            D
        };
        K(const R someR, const Su someSu);
    private:
        R r;
        Su su;
};
#endif /* K_H */

K::K(const R someR, const Su someSu): r{someR}, su{someSu}
{

}

with this approach you are avoiding the user of the class to make mistakes by mixing the types of your parameters in the constructor...