std::filesystem:: status_known

From cppreference.com
Defined in header <filesystem>
bool status_known ( std:: filesystem :: file_status s ) noexcept ;
(1) (since C++17)

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 a known file status.

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

(C++17) (C++17)
determines file attributes
determines file attributes, checking the symlink target
(function)
status of the file designated by this directory entry;
status of the file/symlink designated by this directory entry
(public member function of std::filesystem::directory_entry )