Hi Karl,
that is expected. The moment you close a connection, it is destroyed as
well (see ?close). A destroyed connection cannot be tested. In fact, I've
used isOpen() only in combination with the argument rw.
> con <- file("clipboard",open="r")
> isOpen(con,"write")
[1] FALSE
cheers
On Thu, Jun 19, 2014 at 3:10 PM, Karl Forner <karl.forner@gmail.com>
wrote:
> Hello,
>
> >From the doc, it says:
> "isOpen returns a logical value, whether the connection is currently
> open."
>
> But actually it seems to die on closed connections:
> > con <- file()
> > isOpen(con)
> [1] TRUE
> > close(con)
> > isOpen(con)
> Error in isOpen(con) : invalid connection
>
> Is it expected ?
> Tested on R-3.0.2 and R version 3.1.0 Patched (2014-06-11 r65921) on
> linux x86_64
>
> Karl
>
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>
--
Joris Meys
Statistical consultant
Ghent University
Faculty of Bioscience Engineering
Department of Mathematical Modelling, Statistics and Bio-Informatics
tel : +32 9 264 59 87
Joris.Meys@Ugent.be
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