std::extents<IndexType,Extents...>::static_extent
Min standard notice:
Returns static extent size of an extents at the rank index i. If the rank index i is a dynamic extent, returns std::dynamic_extent.
# Declarations
static constexpr std::size_t static_extent( rank_type i ) noexcept;
(since C++23)
# Parameters
i: The rank index to get the static extent size of
# Return value
The static extent size or std::dynamic_extent value.
# Example
#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.static_extent(0) << ", " << e1.static_extent(1) << '\n';
std::cout << (e2.static_extent(0) == std::dynamic_extent) << ", "
<< (e2.static_extent(1) == std::dynamic_extent) << ", "
<< (e2.static_extent(2) == std::dynamic_extent) << '\n';
}