Re: [Boost-users] Hierarchical enumeration?

Since your types are known at compile time, I think this belongs to the class of problems that systems programmers would traditionally solve with bit masks.

What you're looking for seems to be dynamic_cast.

But I think you're seeking a solution with more explicit support from the language.  Yes if you lay it out as a class hierarchy then I agree with Mathias that dynamic_cast should work well. Kevin