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  1. #include <stdio.h>
  2.  
  3. struct Vector2
  4. {
  5.   float X, Y;
  6. };
  7.  
  8. struct Vector3
  9. {
  10.   float x, y, z;
  11. };
  12.  
  13. struct Space2
  14. {
  15.   typedef Vector2 Vector;
  16. };
  17.  
  18. struct Space3
  19. {
  20.   typedef Vector3 Vector;
  21. };
  22.  
  23. template<typename T>
  24. struct Overload{};
  25.  
  26. template<typename Space>
  27. struct Body
  28. {
  29.   typedef typename Space::Vector vec;
  30.  
  31.   vec v;
  32.  
  33.   void Print(Overload<Space2>);
  34.   void Print(Overload<Space3>);
  35.   void Print();
  36. };
  37.  
  38. template<typename Space>
  39. void Body<Space>::Print(Overload<Space2>)
  40. {
  41.   printf("%f", v.X);
  42. }
  43. template<typename Space>
  44. void Body<Space>::Print(Overload<Space3>)
  45. {
  46.   printf("%f", v.x);
  47. }
  48.  
  49. template<typename Space>
  50. void Body<Space>::Print()
  51. {
  52.   Print(Overload<Space>());
  53. }
  54.  
  55. int main()
  56. {
  57.   Body<Space2> body;
  58.   body.Print();
  59.   return 0;
  60. };
Success #stdin #stdout 0s 3296KB
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0.000000
https://ideone.com/GQyMPw
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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