template parameter packs access Nth type and Nth element

Question

The following paper is the first proposal I found for template parameter packs.

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1603.pdf

At page 16,

Answer 1

Access N-th element?

Using std::forward_as_tuple:

template 
decltype(auto) get(Ts&&... ts) {
  return std::get(std::forward_as_tuple(ts...));
}

Example usage:

template
void foo(Ts&&...ts){

  auto& first = get<0>(ts...);
  auto second = get<1>(ts...);

  first = 'H';
  second = 'E';

  (std::cout << ... << ts);
}

foo('h','e','l','l','o');
// prints "Hello"

---

This answer is to supplement Emile Cormier's answer which gives only the n-th type.