getParent: Gets the string of the parent specified by this pathname
Description
Gets the string of the parent specified by this pathname.
  This is basically, the string before the last path separator of the
  absolute pathname.Usage
## S3 method for class 'default}(pathname, fsep=.Platform$file.sep, ...)':
getParentundefined
 - pathname{A
character string of the pathname to be checked.}
   - fsep{A
character string of the file separator.}
   - ...{Not used.}
 Returns a
character string if the parent exists, otherwise NULL.
 [object Object]
IO
programming