Is it possible to choose a C++ generic type parameter at runtime?

Question

Is there a way to choose the generic type of a class at runtime or is this a compile-time thing in C++?

What I want to do is something like this (pseudocode):

Answer 1

As others have also responded, the answer to your question is "No", C++ doesn't support dynamic typing at run-time. I just wanted to point out that depending on what you're trying to accomplish, you may be able to simulate this dynamic typing using a union, which is how the VARIANT type is implemented in COM.