Checks if the current file position for a connection is at the 'End of File'.
# S3 method for connection
isEof(con, ...)A connection.
Not used.
Returns a logical.
Internally seek() is used, which according to to the R help
is discouraged on Windows. However, after many years of large-scale
testing on various Windows versions and file systems we have yet to
experience issues with using seek() on Windows.
For more information see connection.