gistfile1.hpp

#include <boost/mpl/vector.hpp>
#include <boost/mpl/for_each.hpp>
#include <iostream>

struct register_type
{
	typedef boost::mpl::vector<> type;

	template <typename T>
	struct push_back
	{
//		retypedef register_type::type
//			boost::mpl::push_back<register_type::type, T>;
	};
};

class foo
{
public:
	typedef register_type::push_back<foo> _registered;
	static void f() { std::cout << "foo" << std::endl; }
};

class bar
{
public:
	typedef register_type::push_back<bar> _registered;
	static void f() { std::cout << "bar" << std::endl; }
};

struct call_f
{
	template <typename T>
	void operator ()(T) const
	{
		T::f();
	}
};

int main()
{
	boost::mpl::for_each<register_type::type>(call_f());
}