scope-exit.cpp

// clang++ -Wall -std=c++11 -O0 -o scope-exit scope-exit.cpp && ./scope-exit
// g++ -Wall -std=c++11 -O0 -o scope-exit scope-exit.cpp && ./scope-exit

#include <iostream>

template <typename F>
struct ScopeExit
{
   ScopeExit(F f) : f(f) {}
   ~ScopeExit() { f(); }
   F f;
};

template <typename F>
ScopeExit<F> make_scope_exit(F f)
{
   return ScopeExit<F>(f);
};


int
main(int argc, char *argv[])
{
   auto my_scope_guard = make_scope_exit([]() { std::cout << "hello scope!" << std::endl; });
   
   return 0;
}