isOpen.character {R.utils} | R Documentation |
Checks if there is an open connection to a file
Description
Checks if there is an open connection to a file.
Usage
## S3 method for class 'character'
isOpen(pathname, rw=c("read", "write"), ...)
Arguments
pathname |
An character vector .
|
rw |
A character vector .
If "read" , a file is considered to be open if there exist an
open connection that can read from that file.
If "write" , a file is considered to be open if there exist an
open connection that can write to that file.
Both these values may be specified.
|
... |
Not used.
|
Value
Returns a logical
vector
indicating for each file whether there
exists an open file connection
or not.
Author(s)
Henrik Bengtsson
See Also
See isOpen()
in connections
.
showConnections
().
[Package
R.utils version 2.10.1
Index]