std::mdspan<T,Extents,LayoutPolicy,AccessorPolicy>::rank
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   static constexpr rank_type rank() noexcept;  | 
(since C++23) | |
Returns the number of dimensions in a mdspan. Equivalent to return Extents::rank().
Parameters
(none)
Return value
The number of dimensions.
Example
| This section is incomplete Reason: no example  | 
See also
|    [static]  | 
  returns the static rank of an extents (public static member function of std::extents<IndexType,Extents...>)  | 
|    [static]  | 
  returns the dynamic rank of a mdspan (public static member function)  |