is.open {ff} | R Documentation |
Test whether an ff object or an ff_pointer
is opened.
is.open(x, ...) ## S3 method for class 'ff': is.open(x, ...) ## S3 method for class 'ff_pointer': is.open(x, ...)
x |
x |
... |
further arguments (not used) |
TRUE or FALSE
Jens Oehlschlägel
is.readonly
, open.ff
, close.ff
x <- ff(1:12) is.open(x) close(x) is.open(x) delete(x) rm(x)