[R] How to deal with character(0)?

[Gabor Csardi]

is.character(dd) && length(dd) == 0

should do it i think.
Gabor

On Thu, Nov 15, 2007 at 04:54:45PM -0500, Gang Chen wrote:
> I want to identify whether a variable is character(0), but get lost.  
> For example, if I have
> 
>  > dd<-character(0)
> 
> the following doesn't seem to serve as a good identifier:
> 
>  > dd==character(0)
> logical(0)
> 
> So how to detect character(0)?
> 
> Thanks,
> Gang
> 
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-- 
Csardi Gabor <csardi at rmki.kfki.hu>    MTA RMKI, ELTE TTK