Writing variadic template constructor

Question

Recently I asked this question but now I would like to expand it. I wrote the following class:

template 
class X{
public:
    vector v;
          


        

Answer 1

template 
  X(T n, Rest... rest) {
   add(rest...);
 }

//Just another member function
template
  void add(T n) {
    v.push_back(n);
 }
  template
   void add(T n, Rest... rest) {
     v.push_back(n);
     add(rest...);

 }