True You can design a pretty decent version if your users are willing to write a tiny bit of boilerplate. In fact, the LLVM project sort of does this, for the

True You can design a pretty decent version if your users are willing to write a tiny bit of boilerplate. In fact, the LLVM project sort of does this, for the sake of compiling with -fno-rtti - https://llvm.org/docs/HowToSetUpLLVMStyleRTTI.html https://llvm.org/docs/HowToSetUpLLVMStyleRTTI.html