On Sat, 25 Sep 2004 18:26:11 +0200, Adrian Alexa
<[EMAIL PROTECTED]> wrote:
>Hello R-users,
>
>
>I have observed that is.na() behaves strange on some lists. Here is a
>simple example:
>
>
>> a = list(list('asd'))
>> a
>[[1]]
>[[1]][[1]]
>[1] "asd"
>
>
>> for(i in 1:5)
>+ print(is.na(a))
>[1] TRUE
>[1] FALSE
>[1] TRUE
>[1] TRUE
>[1] TRUE
Yes, this is a bug. The problem is that the code leaves the result
unset in this case (no default on an incomplete switch statement).
I'll fix it.
Thanks for the report!
Duncan Murdoch
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