tuple_size Class <array>
Wraps the size of an array.
template<class Ty, std::size_t N>
class tuple_size<array<Ty, N> > {
static const unsigned value = N;
};
Template Parameters
Ty
The type of an element.N
The size of the array.
Remarks
This template is a specialization of the template class tuple_size Class <tuple>. It has a member value that is an integral constant expression whose value is N, which is the size of the array.
Example
// std_tr1__array__tuple_size.cpp
// compile with: /EHsc
#include <array>
#include <iostream>
typedef std::array<int, 4> Myarray;
int main()
{
Myarray c0 = {0, 1, 2, 3};
// display contents " 0 1 2 3"
for (Myarray::const_iterator it = c0.begin();
it != c0.end(); ++it)
std::cout << " " << *it;
std::cout << std::endl;
// display size " 4"
std::cout << " " << std::tuple_size<Myarray>::value;
std::cout << std::endl;
return (0);
}
0 1 2 3 4
Requirements
Header: <array>
Namespace: std