hasBeenModified.GenericDataFile: Checks whether the file has been modified
Description
Checks whether the file has been modified since last time checked.
Usage
# S3 method for GenericDataFile
hasBeenModified(this, update=TRUE, unknown=TRUE, ...)
Value
Returns TRUE, FALSE, or the value of argument unknown.
Arguments
 
- unknown
 
The logical value returned if the timestamp for the
  previous modification, if any, is unknown.
 
- update
 
If TRUE, the internal check timestamp is updated after
  calling this function, otherwise not.
 
- ...
 
Not used.
See Also
file.info().
  For more information see GenericDataFile.