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  1. #include <iostream>
  2. #include <functional>
  3. #include <memory>
  4.  
  5. class A {
  6. public:
  7.   virtual void operator()() {
  8.     std::cout << "classA" << std::endl;
  9.   }
  10.   virtual ~A() {}
  11. };
  12.  
  13. class B : public A {
  14. public:
  15.   void operator()() {
  16.     std::cout << "classB" << std::endl;
  17.   }
  18. };
  19.  
  20. class C : public B {
  21. public:
  22.   void operator()() final {
  23.     std::cout << "classC" << std::endl;
  24.   }
  25. };
  26.  
  27. int main()
  28. {
  29.   std::shared_ptr<A> a(new A);
  30.   std::shared_ptr<A> b(new B);
  31.   std::shared_ptr<A> c(new C);
  32.  
  33.   std::function<void(void)>func[] = {
  34.     std::bind(std::mem_fn(&A::operator()), a),
  35.     std::bind(std::mem_fn(&A::operator()), b),
  36.     std::bind(std::mem_fn(&A::operator()), c),
  37.   };
  38.  
  39.   for (auto a : func)
  40.     a();
  41. }
Success #stdin #stdout 0s 3476KB
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Standard input is empty
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classA
classB
classC
https://ideone.com/91JDrF
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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