rank Class

 

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Gets number of array dimensions.

template <class Ty>  
struct rank;  

Parameters

Ty
The type to query.

The type query holds the value of the number of dimensions of the array type Ty, or 0 if Ty is not an array type.

// std_tr1__type_traits__rank.cpp   
// compile with: /EHsc   
#include <type_traits>   
#include <iostream>   
  
int main()   
    {   
    std::cout << "rank<int> == "   
        << std::rank<int>::value << std::endl;   
    std::cout << "rank<int[5]> == "   
        << std::rank<int[5]>::value << std::endl;   
    std::cout << "rank<int[5][10]> == "   
        << std::rank<int[5][10]>::value << std::endl;   
  
    return (0);   
    }  
  

rank<int> == 0  
rank<int[5]> == 1  
rank<int[5][10]> == 2  

Header: <type_traits>

Namespace: std

<type_traits>
extent Class

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