#include <iostream>


struct empty_struct
{
	typedef void print_type() const;
	virtual print_type printme = 0;
};


template <class Type>
void print_it(const Type &oObject, typename Type::print_type Type:: *mMembers[])
{ if (mMembers) while (*mMembers) (oObject.**mMembers++)(); }


class derived_struct : public empty_struct
{
public:
	print_type derived_struct:: *operator , (bool rReally) const
	{ return rReally? &derived_struct::showme : NULL; }

private:
	void showme() const
	{ std::cout << "showed!\n"; }

	void printme() const
	{ std::cout << "printed!\n"; }
};


int main()
{
	derived_struct object;

	empty_struct::print_type derived_struct:: *members[] =
	  { &empty_struct::printme, (object, true), (object, false) };

	print_it(object, members);
}