#pragma once

// from: https://www.gingerbill.org/article/2015/08/19/defer-in-cpp/

#include <functional>

struct privDefer {
	std::function<void()> f;
	privDefer(std::function<void()> f) : f(f) {}
	~privDefer() { f(); }
};

#define DEFER_1(x, y) x##y
#define DEFER_2(x, y) DEFER_1(x, y)
#define DEFER_3(x)    DEFER_2(x, __COUNTER__)
#define defer(code)   auto DEFER_3(_defer_) = privDefer([&](){code;})