Douglas Bates <bates@stat.wisc.edu> writes:
> At least I think the word I want "idempotent" - it has been a
long
> debugging session and my brain is fried so I am not sure.
I.: f(f(x)) == f(x) all x, so it's exactly the right term...
> What I mean is that as.name applied to a name gives an error.
> > as.name("foo")
> foo
> > as.name(as.name("foo"))
> Error in as.name(x) : character argument required
>
> It might help if it were a bit more flexible about the arguments it
> accepts.
This is plainly a bug. If it bothers you badly, insert
if(is.name(x)) return(x)
at the start of as.name.
In general, it should invariably hold that
is.xx(x) == TRUE implies as.xx(x) == x
and
is.xx(as.xx(x)) == TRUE unless as.xx fails
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk) FAX: (+45) 35327907
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