fork(5) download 
  1. #include <type_traits>
  2.  
  3. template <typename T, typename... Ts> struct get_index;
  4.  
  5. template <typename T, typename... Ts>
  6. struct get_index<T, T, Ts...> : std::integral_constant<std::size_t, 0> {};
  7.  
  8. template <typename T, typename Tail, typename... Ts>
  9. struct get_index<T, Tail, Ts...> :
  10.     std::integral_constant<std::size_t, 1 + get_index<T, Ts...>::value> {};
  11.  
  12. static_assert(0 == get_index<char, char, int, void>::value, "");
  13. static_assert(1 == get_index<int, char, int, void>::value, "");
  14. static_assert(2 == get_index<void, char, int, void>::value, "");
  15.  
  16. int main()
  17. {}
  18.  
Success #stdin #stdout 0s 3336KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/Zn0eQf
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!