Hi!  I'm wondering if there's a smart way around this:

fileName= (some valid file on your system)

>    fileCon=file(fileName, open="rt")
>    l<-readLines (fileCon, n= 1)
>
> isOpen(fileCon)
[1] TRUE
>    close(fileCon)
> isOpen(fileCon)
Error in isOpen(fileCon) : invalid connection

How do you test for a file being closed if isOpen gives you an error message?

Thanks!

-Jim

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