fork download 
  1. #include <iostream>
  2. #include <memory>
  3.  
  4. struct Base
  5. {
  6. 	static std::shared_ptr<Base> Create(int args)
  7. 	{
  8. 		std::cout << "Base::Create(" << args << ")" << std::endl;
  9. 		return std::make_shared<Base>();
  10. 	}
  11. };
  12.  
  13. template<typename T> struct Inherited: T
  14. {
  15. 	static std::shared_ptr<Base> Create(int args)
  16. 	{
  17. 		return T::Create(args);
  18. 	}
  19. };
  20.  
  21. struct Derived: Inherited<Base>
  22. {
  23. 	static std::shared_ptr<Base> Create(int args)
  24. 	{
  25. 		if (args <= 0)
  26. 		{
  27. 			Inherited::Create(args);
  28. 		}
  29. 		else
  30. 		{
  31. 			std::cout << "Derived::Create(" << args << ")" << std::endl;
  32. 			return std::shared_ptr<Derived>();
  33. 		}
  34. 	}
  35. };
  36.  
  37. int main()
  38. {
  39. 	Derived::Create(0);
  40. 	Derived::Create(1);
  41.  
  42. 	return 0;
  43. }
Success #stdin #stdout 0s 3432KB
comments (?)
stdin 
Standard input is empty
stdout 
Base::Create(0)
Derived::Create(1)
https://ideone.com/QA8huB
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!