fork download 
  1. #include <cstdio>
  2. #include <functional>
  3.  
  4.  
  5. class B { 
  6. public:
  7.     typedef std::function<void (B*)> Function;    
  8.  
  9.     void f3() {
  10.         puts("okay");
  11.     }
  12.     void f1() {   
  13.         _func(this);
  14.     }
  15.  
  16.     Function _func;
  17. };
  18.  
  19. class D : public B 
  20. {
  21. public:
  22.     D()
  23.     {
  24.         _func = (void (B::*)()) &D::f2; // Here is the awfull cast I hate to do
  25.     }
  26.  
  27.     void f2() {
  28.         f3();
  29.     }
  30.  
  31. };
  32.  
  33. int main() {
  34.     D d;
  35.     d.f1();
  36. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin 
Standard input is empty
stdout 
okay
https://ideone.com/yOR0xT
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!