fork download
copy 
  1. #include <stdio.h>
  2.  
  3.  
  4. class TraitsBase{
  5. protected:
  6.  
  7.  
  8.     typedef void (TraitsBase::*fptr)();
  9.     fptr ptr;
  10.     TraitsBase(fptr p) : ptr(p){}
  11. public:
  12.     void func1(){
  13.         printf("func1\n");
  14.     }
  15.     void func2(){
  16.         printf("func2\n");
  17.     }
  18.  
  19.     void call(){
  20.         (this->*ptr)();
  21.     }
  22. };
  23. template<class T> class Traits;
  24. template<> class Traits<int> : public TraitsBase{
  25. public:
  26.     Traits<int>() : TraitsBase(&TraitsBase::func1){};
  27.  
  28. };
  29. template<> class Traits<float>: public TraitsBase{
  30. public:
  31.     Traits<float>() : TraitsBase(&TraitsBase::func2){}
  32. };
  33. int main(){
  34.     Traits<int> i;
  35.     i.call();
  36.     Traits<float> f;
  37.     f.call();
  38.  
  39. }
Success #stdin #stdout 0.02s 2680KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
func1
func2
https://ideone.com/tmu7J6
language:
C++ (gcc 8.3)
created:
12 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!