Member function template with the number of parameters depending on an integral template parameter

Question

I have the following class template:

template
class MyClass;

where T is some type, N - num

Answer 1

Your third variant's second non-type param should have prefix typename not class :

template::type = 0>
void foo(T2... args);
..
foo(1,2,3);

Check it

Gcc 4.7.0 snapshots has some bugs with templates I guess, if you try it with gcc 4.6.2/1 it shall work.