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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. class A {};
  5.  
  6. class B : public A {};
  7.  
  8. class X {};
  9.  
  10. class Y : public X {};
  11.  
  12. class Other {};
  13.  
  14. template <typename Param, std::enable_if_t<std::is_base_of<A, Param>::value, bool> = true>
  15. void doStuff() { std::cout << "Base A" << std::endl; }
  16.  
  17. template <typename Param, std::enable_if_t<std::is_base_of<X, Param>::value, bool> = true>
  18. void doStuff() { std::cout << "Base X" << std::endl; }
  19.  
  20. template <typename Param, std::enable_if_t<!(std::is_base_of<A, Param>::value || std::is_base_of<X, Param>::value), bool> = true>
  21. void doStuff() { std::cout << "Something else" << std::endl; }
  22.  
  23. int main()
  24. {
  25.     doStuff<B>();
  26.     doStuff<Y>();
  27.     doStuff<Other>();
  28. }
Success #stdin #stdout 0.01s 5544KB
comments (?)
stdin
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Standard input is empty
stdout
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Base A
Base X
Something else
https://ideone.com/YqNZct
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
public

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