returns all but the last element of path, typically the path's directory.
Remarks
After dropping the final element using Split, the path is Cleaned and trailing slashes are removed.
If the path is empty, Dir returns ".".
If the path consists entirely of slashes followed by non-slash bytes, Dir returns a single slash. In any other case, the returned path does not end in a slash.
returns all but the last element of path, typically the path's directory.
Remarks
After dropping the final element using Split, the path is Cleaned and trailing slashes are removed. If the path is empty, Dir returns ".". If the path consists entirely of slashes followed by non-slash bytes, Dir returns a single slash. In any other case, the returned path does not end in a slash.