scope_exit is just not very idiomatic C++. If used, It's for quick'n'dirty I'm too rushed to wrap it in a class times. It's use in C++ implies that you are wo

scope_exit is just not very idiomatic C++. If used, It's for quick'n'dirty I'm too rushed to wrap it in a class times. It's use in C++ implies that you are worrying about something at the wrong abstraction level too. With that though, I would think that the default > c++11 implicit noexcept is proper. Crash hard when an exception is thrown and maybe even static assert on the result of noexcept( on_exit_cb ) so that it gives a compile error, lambda's can be noexcept and c functions cannot throw(thinking fclose and friends)