#include <iostream>
#include <functional>
 
using namespace std;
 
struct A
{
	void f() const { cout << this << ", A::f()" << endl; }
	void g() const { cout << this << ", A::g()" << endl; }
	void h() const { cout << this << ", A::h()" << endl; }
};
 
int main()
{
	A a;
	auto f = function<void(A&)>{&A::f};
	auto g = bind(&A::g, &a);
	auto h = [&a](){ a.h(); };
 
	function<void()> func;
 
	cout << "Uzycie: " << endl;
	f(a);
	g();
	h();
 
	cout << "std::function: " << endl;
	func = g;
	func();
	func = h;
	func();
 
}
 

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