C++ Design Pattern for Passing a Large Number of Parameters

Question

I have a reasonably-sized class that implements several logically-related algorithms (from graph theory). About 10-15 parameters are required as input to the algorithm. Thes

Answer 1

You have several different ideas that you should be suggesting with your design:

1. The parameters are purely inputs.
2. The parameters are specific to your algorithm.
3. The paramaters have default values that are sane.

---

class Algorithm {
  public:
    class Parameters { // Nested class, these are specific to your algorithm.
      public:
        Parameters() : values(sensible_default) { }
        type_t values; // This is all about the data.
    };

    Algorithm(const Parameters ¶ms) : params_(params) { }

    void run();

  private:
    const Parameters params_; // Paramaeters don't change while algorithm
};                            // is running. 

This is what I would suggest.