NAME¶

std::extents::extent - std::extents::extent

Synopsis¶

constexpr index_type extent( rank_type i ) const noexcept; (since C++23)

Returns dynamic extent size of an extents at a certain rank index.

Parameters¶

i - The rank index to get the extent size of

Return value¶

The dynamic extent size of an extents at a certain rank index.

Example¶

// Run this code

#include <iostream>
#include <mdspan>

int main()
{
std::extents<int, 1, 2> e1;
std::extents<int, 3, std::dynamic_extent, std::dynamic_extent> e2(4, 5);
std::cout << e1.extent(0) << ", " << e1.extent(1) << '\n';
std::cout << e2.extent(0) << ", " << e2.extent(1) << ", " << e2.extent(2) << '\n';
}

Output:¶

1, 2
3, 4, 5

See also¶

static_extent returns static extent size of an extents at a certain rank index
[static] (public static member function)
extent obtains the size of an array type along a specified dimension
(C++11) (class template)