std::extents<IndexType,Extents...>::dynamic-index

private:
    template< class OtherIndexType >
    static constexpr auto /*dynamic-index*/( rank_type i ) noexcept;

(since C++23)
(exposition only*)

Returns the number of dynamic extents below index i. If i <= rank() is false, the behavior is undefined.

Parameters

i

-

the index

Return value

The number of E_r with r < i for which E_r is a dynamic extent.

Example

See also

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https://en.cppreference.com/w/cpp/container/mdspan/extents/dynamic-index