Is it really so far-fetched? - reflection-based metaprogramming is coming into C++ - the reflection will also read user code (from the view of a library using reflection on user-provided code or classes) - it is possible and supported to use unicode in C++ identifiers - we probably need all kind of constexpr functions supporting string processing at compile-time -----Ursprüngliche Nachricht----- Von:Thiago Macieira via Std-Proposals <std-proposals_at_[hidden]> You meant reflection-based metaprogramming. I'd say this is a contrived example that should not be used as a use-case.