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  1. #include <type_traits>
  2. #include <iostream>
  3.  
  4. template<typename T>
  5. struct foo
  6. {
  7.  
  8. };
  9.  
  10.  
  11. template<typename T>
  12. bool operator==( const foo<T>& lhs , const foo<T>& rhs )
  13. {
  14. 	return true;
  15. }
  16.  
  17. template<typename T , typename U>
  18. bool operator==( const foo<T>& lhs , const foo<U>& rhs )
  19. {
  20. 	return false;
  21. }
  22.  
  23.  
  24. int main()
  25. {
  26. 	std::cout << std::boolalpha << ( foo<int>() == foo<int>() )    << std::endl;
  27. 	std::cout << std::boolalpha << ( foo<int>() == foo<char>() ) << std::endl;
  28. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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true
false
https://ideone.com/W16aw2
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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