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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Base {
  5.   virtual void a() = 0;
  6.   virtual void b() = 0;
  7. };
  8.  
  9. struct Impl {
  10.   void a() {
  11.   	std::cout << "a()" << std::endl;
  12.   }	
  13.   void b() {
  14.   	std::cout << "b()" << std::endl;
  15.   }
  16. };
  17.  
  18. struct Derived : Base, Impl {
  19. 	void a(){Impl::a();}
  20. 	void b(){Impl::b();}
  21. };
  22.  
  23. void foo(Base&& b) {
  24.   b.a();
  25.   b.b();
  26. }
  27.  
  28. int main() {
  29. 	foo(Derived{});
  30. 	return 0;
  31. }
Success #stdin #stdout 0s 15240KB
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Standard input is empty
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a()
b()
https://ideone.com/1KtVpo
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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