Is it possible to transform the types in a parameter pack?

Question

Is it possible to transform the types of a parameter pack and pass it on?

E.g. given the following:

template struct X {};
templa         


        

Answer 1

Yes we can do that

template<template<typename...> class List, 
         template<typename> class Mod, 
         typename ...Args>
struct magic {
    typedef List<typename Mod<Args>::type...> type;
};