Variable length template arguments list?

Question

I remember seing something like this being done:

template 
class X : public ListOfTypenames {};

that is, X inherits from

Answer 1

Sounds like you are referring to C++0x Variadic Templates. You can also achieve the same effect using Alexandrescu's TypeList construct from Loki.

I believe the variadic template syntax in question would look like the following.

template 
class X : public T... {};