This is a dank file

scope_exit.cpp

#include <functional>
#include <iostream>
#include <memory>

template<typename Callable>
struct ScopeExit
{
  explicit ScopeExit(Callable _callable)
    : m_callable(_callable) {}
  ~ScopeExit() { m_callable(); }

private:
  Callable m_callable;
};

template<typename Callable>
ScopeExit<Callable>
make_scope_exit(Callable callable)
{
  return ScopeExit<Callable>(callable);
}

struct memes {
  explicit memes(int * _memes) {
    m_memes = _memes;
  }
  void operator () () {
    std::cout<<"int is: "<<*m_memes<<std::endl;
  }
private:
  int * m_memes = nullptr;
};

struct A {
  ~A() { std::cout<<"call to destructor"<<std::endl; }
};

int main()
{
  int * memes = new int();
  *memes = 70;
  auto my_a = std::make_shared<A>();
  auto at_exit = make_scope_exit([&memes]() {
      std::cout<<"int is: "<<*memes<<std::endl;
      delete memes;
    });

  std::cout<<"This prints first!"<<std::endl;
  return 0;
}