Throwing an exception out of a destructor is dangerous. If another exception is already propagating the application will terminate. #include <iostream> class Bad { public: // Added the noexcept(false) so the code keeps its original meaning. // Post C++11 destructors are by default `noexcept(true)` and // this will (by default) call terminate if an exception … Read more
A simple (and perhaps overused) example of RAII is a File class. Without RAII, the code might look something like this: File file(“/path/to/file”); // Do stuff with file file.close(); In other words, we must make sure that we close the file once we’ve finished with it. This has two drawbacks – firstly, wherever we use … Read more
It’s a really terrible name for an incredibly powerful concept, and perhaps one of the number 1 things that C++ developers miss when they switch to other languages. There has been a bit of a movement to try to rename this concept as Scope-Bound Resource Management, though it doesn’t seem to have caught on just … Read more