How to auto-include all headers in directory

Question

I\'m going through exercises of a C++ book. For each exercise I want to minimize the boilerplate code I have to write. I\'ve set up my project a certain way but it doesn\'t seem

Answer 1

Why not using object mechanisms ?

You can use an Exemplar strategy for this.

class BaseExercise
{
public:
  static bool Add(BaseExercise* b) { Collection().push_back(b); return true; }
  static size_t Solve() {
    size_t nbErrors = 0;
    for(collections_type::const_iterator it = Collection().begin(), end = Collection().end(); it != end; ++it)
      nbErrors += it->solve();
    return nbErrors;
  }

  size_t solve() const
  {
    try {
      this->solveImpl();
      return 0;
    } catch(std::exception& e) {
      std::cout << mName << " - end - " << e.what() << std::endl;
      return 1;
    }
  }
protected:
  explicit BaseExercise(const char* name): mName(name)
  {
  }
private:
  typedef std::vector collection_type;
  static collection_type& Collection() { collection_type MCollection; return MCollection; }

  virtual void solveImpl() const = 0;

  const char* mName;
}; // class BaseExercise

template 
class BaseExerciseT: public BaseExercise
{
protected:
  explicit BaseExerciseT(const char* b): BaseExercise(b) { 
    static bool MRegistered = BaseExercise::Add(this);
  }
};

Okay, that's the base.

// Exercise007.h
#include "baseExercise.h"

class Exercise007: public BaseExerciseT
{
public:
  Exercise007(): BaseExerciseT("Exercise007") {}
private:
  virtual void solveImpl() const { ... }
};

// Exercise007.cpp
Exercise007 gExemplar007;

And for main

// main.cpp
#include "baseExercise.h"

int main(int argc, char* argv[])
{
  size_t nbErrors = BaseExercise::Solve();
  if (nbErrors) std::cout << nbErrors << " errors" << std::endl;
  return nbErrors;
}

And here, you don't need any script ;)