If you look at the C++ standard, you will notice that std::hash is defined as a struct (specifically, a class template) rather than a simple function.… ...more

Perfect forwarding is a powerful C++ technique used primarily in template programming to preserve the value category (lvalue vs. rvalue) of arguments … ...more

Virtual functions are a core feature of C++, introduced at the very beginning to enable Run-time Polymorphism. This gives C++ a capability that C lack… ...more