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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. struct Outer
  5. {
  6. 	template<typename T, typename = void>
  7. 	struct Inner
  8. 	{
  9. 	};
  10. 	template<typename T>
  11. 	struct Inner
  12. 	<
  13. 		typename std::enable_if
  14. 		<
  15. 			std::is_same<T, double>::value,
  16. 			T
  17. 		>::type,
  18. 		T
  19. 	>
  20. 	{
  21. 	};
  22. };
  23.  
  24. int main()
  25. {
  26. 	Outer::Inner<int> oii;
  27. 	Outer::Inner<double> oid;
  28. }
  29.  
Success #stdin #stdout 0s 3336KB
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https://ideone.com/IThuo2
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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