Move constructor and const member variables

Question

I like the idea of const member variables especially when I wrap C functions into classes. The constructor takes a resource handle (e.g. a file descriptor) that stays valid

Answer 1

The typical way to implement a move constructor is to zero out or otherwise invalidate the members of the instance being moved (see MSDN for a simple example). Therefore I would say just don't use const here as it is incompatible with the goals of move semantics.