将每个类型包装在模板化类中的可变参数模板中

Question

Given a variadic template Types... , I would like to store A<> for each of the types in the pack. This could be done in a tuple of A<> 's, but I'd need to programmatically derive the type of said tuple.

Is such a thing even possible in c++11/14/17?

template <class T> class A { };

template <class... Types>
class B
{
   // A tuple of A<>'s for each type in Types...
   std::tuple<A<Type1>, A<Type2>, ...> data;
};

Answer 1

Simply with:

template <class... Types>
class B
{
   std::tuple<A<Types>...> data;
};