Is there any sense in marking a base class function as both virtual and final?
Yes, at least temporarily.
I found myself in a relatively large and unfamiliar existing C++ source code base. Much of the code was written prior to C++11. I found that I wanted to ensure that all overrides of a virtual function in a base class were marked with override. The hard part is locating all of those overrides.
I marked the virtual function in the base class with final, and the compiler quickly showed me where every single override was declared. It was then very easy to decorate the overrides how I wanted, and remove the final from the virtual in the base class.
