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  1. #include <iostream>
  2. #include <string>
  3.  
  4. #include <typeinfo>
  5. #include <cstdlib>
  6. #include <memory>
  7. #include <cxxabi.h>
  8.  
  9. template <typename T> std::string TypeName(const T &)
  10. {
  11. 	auto name = typeid(T).name();
  12. 	int status = -4;
  13. 	std::unique_ptr<char, void(*)(void*)> res {
  14. 		abi::__cxa_demangle(name, NULL, NULL, &status),
  15. 		std::free
  16. 	};
  17.     return (status==0) ? res.get() : name ;
  18. }
  19.  
  20. template <typename char_type, size_t LENGTH>
  21. std::basic_string<char_type> literal(const char (&value)[LENGTH])
  22. {
  23. 	using string = std::basic_string<char_type>;
  24.  
  25. 	string result{};
  26. 	result.reserve(LENGTH);
  27.  
  28. 	std::copy(std::begin(value), std::end(value), std::back_inserter(result));
  29.  
  30. 	return result;
  31. }
  32.  
  33. int main()
  34. {
  35. 	std::cout << TypeName(literal<char>("test")) << '\n';
  36. 	std::cout << TypeName(literal<char32_t>("test")) << '\n';
  37. 	std::cout << TypeName(literal<char16_t>("test")) << '\n';
  38.  
  39. 	return 0;
  40. }
Success #stdin #stdout 0s 3464KB
comments (?)
stdin 
Standard input is empty
stdout 
std::string
std::basic_string<char32_t, std::char_traits<char32_t>, std::allocator<char32_t> >
std::basic_string<char16_t, std::char_traits<char16_t>, std::allocator<char16_t> >
https://ideone.com/IHvWl8
Char literal de otro underlying char_t
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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