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  1. #include<type_traits>
  2.  
  3. namespace detail
  4. {
  5.     enum enabler {};
  6. }
  7.  
  8. template <int overload, typename Condition>
  9. using EnableIf = std::enable_if_t<Condition::value, detail::enabler>;
  10.  
  11. template <typename T,
  12.     EnableIf<0, std::is_same<T, int>>...>
  13.     T twice(T t) { return 2 * t; }
  14.  
  15. template <typename T,
  16.     EnableIf<0, std::is_same<T, float>>...>
  17.     T twice(T t) { return 2 * t; }
  18.  
  19. int main()
  20. {
  21.     twice(1);
  22.     twice(1.f);
  23.     return 0;
  24. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/Rv3xnO
language:
C++14 (clang 8.0)
created:
8 years ago
visibility:
public

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