R: Checks if there is an open connection to a file

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 2.7.0 Index]