It's all about polymorphism! A Googly search on "C++ virtual functions" yields billions of articles on the subject (ok, maybe not that many). For example: Polymorphic and Virtual Functions in C++[^] Cheers, Mark Mark Salsbery Microsoft MVP - Visual C++ :java:

thanks: https://movied.org

CP Visitor wrote: Convert the templates to macros (templates and macros are very similar in C++). That may not always be possible. Especially if the existing code is using type expressions. Good music: In my rosary[^]