std::extents<IndexType,Extents...>::dynamic-index-inv
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                    |   private: static constexpr auto /*dynamic-index-inv*/( rank_type i ) noexcept;  | 
 (since C++23)  (exposition only*)  | 
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Returns the number r such that in range [0, r + 1) there are exactly [0, i + 1) dynamic extents. If i <= rank_dynamic() is false, the behavior is undefined.
Parameters
| i | - | the index | 
Return value
The minimum value of r such that dynamic-index(r + 1) == i + 1 is true.
See also
| This section is incomplete |