template experiments

gistfile1.cpp

//
//  main.cpp
//  CppDatabase
//
//  Created by Haldun Bayhantopcu on 23/04/14.
//  Copyright (c) 2014 Monoid. All rights reserved.
//

#include <iostream>
#include <memory>

template <typename Fun>
class Functor {
public:
  Functor(const Fun& fun) : fun_{fun} {}
  
  template<typename... Params>
  auto operator()(Params&&... params) -> decltype(Fun(), void()) {
    return fun_(std::forward<Params>(params)...);
  }
  
private:
  Fun fun_;
};

template<typename Fun>
Functor<Fun> make_functor(Fun f) {
  return Functor<Fun>(f);
}

void TestFunction(int x, double y) {
  std::cout << x << " and " << y << '\n';
}

int main(int argc, const char * argv[]) {
  auto f = make_functor(TestFunction);
  f(1, 4);
  return 0;
}