C++ std::function cannot find correct overload

Question

Consider the following case:

void Set(const std::function &fn);
void Set(const std::function &fn);

Answer 1

I suggest:

  void Set(void(*f)(int, int))
  { 
      std::function wrap(f);
      // ...
  }

  void Set(void(*f)(int))
  { 
      std::function wrap(f);
      // ...
  }