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  1. #include <iostream>
  2.  
  3. template<typename T>
  4. struct CRTP_base
  5. {
  6.     void execute()
  7.     {
  8.         static_cast<T*>(this)->f();
  9.     }
  10. };
  11.  
  12. struct Foo : public CRTP_base<Foo>
  13. {
  14.     void f()
  15.     {
  16.         std::cout << "Wow, compile-time resolved polymorphism!" << std::endl;
  17.     }
  18. };
  19.  
  20. int main()
  21. {
  22.    Foo my_foo_instance;
  23.    CRTP_base<Foo>& base_reference = my_foo_instance;
  24.    base_reference.execute();
  25. };
Success #stdin #stdout 0s 3340KB
comments (?)
stdin 
Standard input is empty
stdout 
Wow, compile-time resolved polymorphism!
https://ideone.com/51iPnq
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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