std::experimental::filesystem::status_known
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                    < cpp | experimental | fs
                    
                                                            
                    |   Defined in header  <experimental/filesystem>
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|   bool status_known( file_status s );  | 
(1) | (filesystem TS) | 
Checks if the given file status is known, Equivalent to s.type() != file_type::none.
Parameters
| s | - | file status to check | 
Return value
true if the given file status is an unknown file status.
Exceptions
noexcept specification:  
noexcept
  Notes
Despite the name, the function checks for the file status of file_type::none (meaning an error occurred), not file_type::unknown (meaning file exists, but its type cannot be determined).
See also
|   determines file attributes determines file attributes, checking the symlink target (function)  | |
|   cached status of the file designated by this directory entry cached symlink_status of the file designated by this directory entry (public member function of std::experimental::filesystem::directory_entry)  |