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  1. #include <iostream>
  2. #include <tuple>
  3.  
  4. namespace static_iterator
  5. {
  6.     template <int... Idx>
  7.     struct index { };
  8.  
  9.     template <int N, int... Idx>
  10.     struct sequence : sequence<N - 1, N - 1, Idx...> { };
  11.  
  12.     template <int... Idx>
  13.     struct sequence<0, Idx...> : index<Idx...> { };
  14. }
  15.  
  16.  
  17.  
  18. struct A {void prnt(){std::cout<<"A\n";} };    
  19. struct B {void prnt(){std::cout<<"B\n";} };    
  20. struct C {void prnt(){std::cout<<"C\n";} };
  21.  
  22. template<typename...Arg>
  23. class HeterogenousContainer
  24. {
  25. public:
  26.     HeterogenousContainer() : 
  27.             number_elems(sizeof...(Arg)){}
  28.  
  29.     std::tuple<Arg...> elements;
  30.  
  31.     template <int... Idx>
  32.     void process(static_iterator::index<Idx...>)
  33.     {
  34.          auto aux = { (std::get<Idx>(elements).prnt(), 0) ... };
  35.     }
  36.  
  37.     void process()
  38.     {
  39.         process(static_iterator::sequence<sizeof...(Arg)>());
  40.     }
  41.  
  42.     unsigned int get_number_elements(){return number_elems;}
  43.  
  44. private:
  45.     unsigned int number_elems;
  46. };
  47. int main()
  48. {  
  49.     HeterogenousContainer<A,B,C,A,A,B,C,B,B,C> obj;
  50.     obj.process();
  51. }
Success #stdin #stdout 0s 2852KB
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Standard input is empty
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A
B
C
A
A
B
C
B
B
C
https://ideone.com/3bdwJx
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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