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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. struct MyClass {
  5.     virtual void debug () const {
  6.         std::cout << "MyClass" << std::endl;
  7.     };
  8. };
  9.  
  10. struct MyClassDer : public MyClass {
  11.     virtual void debug () const {
  12.         std::cout << "MyClassDer" << std::endl;
  13.     };
  14. };
  15.  
  16. template <
  17. 	typename T
  18. >
  19. void func (const T& t, typename std::enable_if<!std::is_base_of<MyClass, T>::value>::type * = nullptr) {
  20.     std::cout << "func template" << std::endl;
  21. }
  22.  
  23. template <
  24. 	typename T
  25. 	, typename = typename std::enable_if<std::is_base_of<MyClass, T>::value>::type
  26. >
  27. void func (const T& t) {
  28.     std::cout << "func overloaded" << std::endl;
  29.     t.debug ();
  30. }
  31.  
  32.  
  33. int main(int argc, char **argv) {
  34.     func (1);
  35.     MyClass myClass;
  36.     func (myClass);
  37.     MyClassDer myClassDer;
  38.     func (myClassDer);
  39. }
Success #stdin #stdout 0s 3340KB
comments (?)
stdin 
Standard input is empty
stdout 
func template
func overloaded
MyClass
func overloaded
MyClassDer
https://ideone.com/0oiKzu
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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