[R] Check if directory exists

[Aleksey Y Naumov]

On Fri, 19 May 2000, Aleksey Naumov wrote:

> Dear R users,
> 
> is there a function to check if a directory exists? file.exists() works
> for both files and dirs, but there's no way to tell, AFAIK. Something
> like
> file.exists(dir=T), or is.dir() would be nice...
> 
> Thanks
> 
> Aleksey
> 
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