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  1. #include<iostream>
  2. #include <vector>
  3.  
  4. template<typename Type, Type val>
  5.   struct integral_constant
  6.   {
  7.     static constexpr Type value =val;
  8.   };
  9.  
  10.   template<typename>
  11.     struct rank
  12.     : public integral_constant<std::size_t, 0> { };
  13.  
  14.   template<typename Type>
  15.     struct rank< std::vector<Type> >
  16.     : public integral_constant<std::size_t, 1 + rank<Type>::value> { };
  17.  
  18.     template<class T>
  19.    constexpr size_t vector_dimenstions(T)
  20.     {
  21.          return rank<T>::value ;
  22.     }
  23.  
  24. int main()
  25. {
  26.     std::vector<std::vector<std::vector<int>>> vec;
  27.       std::cout<<vector_dimenstions(vec) << '\n';
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 3340KB
comments (?)
stdin 
Standard input is empty
stdout 
3
https://ideone.com/UIcuFM
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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