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  1. #include <iostream>
  2.  
  3. template<typename T>
  4. std::string getClassName()
  5. {
  6. 	std::string fullFuncName = __PRETTY_FUNCTION__;
  7. 	const char start[] = "with T = ";
  8. 	const char end[] = ";";
  9. 	auto beginning = fullFuncName.find(start);
  10. 	auto ending = fullFuncName.find(end, beginning);
  11. 	return {fullFuncName.begin() + beginning + sizeof(start) - 1,
  12. 			fullFuncName.begin() + ending};
  13. }
  14.  
  15. struct Test
  16. {
  17. 	Test()
  18. 	{
  19. 		std::cout << "Created instance of " << getClassName<std::decay_t<decltype(*this)>>() << '\n';
  20. 	}
  21. };
  22.  
  23. template<typename Derived>
  24. struct IPrintable
  25. {
  26. 	static std::string getMyName()
  27. 	{
  28. 		return getClassName<Derived>();
  29. 	}
  30. };
  31.  
  32. struct TestPrintable : IPrintable<TestPrintable>
  33. {
  34. 	void sayHello() const
  35. 	{
  36. 		std::cout << "Hi, I'm " << getMyName() << '\n';
  37. 	}
  38. };
  39.  
  40. int main() {
  41. 	std::cout << getClassName<int>() << '\n';
  42. 	Test test;
  43. 	TestPrintable testPrintable;
  44. 	testPrintable.sayHello();
  45.  
  46. 	return 0;
  47. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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int
Created instance of Test
Hi, I'm TestPrintable
https://ideone.com/YY9kTO
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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