Gets number of array dimensions.
template<class Ty>
struct rank;
Parameters
- Ty
The type to query.
Remarks
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.
Example
// 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
Requirements
Header: <type_traits>
Namespace: std