UPDATE This answer is rather old, and so describes what was ‘good’ at the time, which was smart pointers provided by the Boost library. Since C++11, the standard library has provided sufficient smart pointers types, and so you should favour the use of std::unique_ptr, std::shared_ptr and std::weak_ptr. There was also std::auto_ptr. It was very much … Read more
The override keyword serves two purposes: It shows the reader of the code that “this is a virtual method, that is overriding a virtual method of the base class.” The compiler also knows that it’s an override, so it can “check” that you are not altering/adding new methods that you think are overrides. To explain … Read more
I am trying to follow http://gnuu.org/2009/09/18/writing-your-own-toy-compiler tutorial. I am getting the following error. What am I missing?
The problem C++ includes useful generic functions like std::for_each and std::transform, which can be very handy. Unfortunately they can also be quite cumbersome to use, particularly if the functor you would like to apply is unique to the particular function. If you only use f once and in that specific place it seems overkill to … Read more
From the cplusplus.com page about the begin member function of unordered_map (link): Notice that an unordered_map object makes no guarantees on which specific element is considered its first element. So no, there is no guarantee the elements will be iterated over in the order they were inserted. FYI, you can iterate over an unordered_map more … Read more