Arne Mertz talked about misused guidelines at C++OnSea. Among those, there was the rule of 5. Which made me think about a pattern I’ve seen. Let’s first repeat what the rule of 5 says. The Rule of Five tells us that if we need to define any of a copy constructor, copy assignment operator, move constructor, move assignment operator or destructor then we usually need to define all five. Fair enough. Have you ever seen classes where the default constructor and destructor are explicitly defau...
