[R] Is there a function to test if all the elements in a vector are unique

Peng Yu pengyu.ut at gmail.com
Wed Dec 2 02:32:41 CET 2009


On Tue, Dec 1, 2009 at 1:40 AM, Karl Ove Hufthammer <karl at huftis.org> wrote:
> On Tue, 1 Dec 2009 14:48:04 +1100 Remko Duursma <remkoduursma at gmail.com>
> wrote:
>> any(duplicated(c(1,2,2)))
>
> or
> anyDuplicated(c(1,2,2))
> which is slightly more efficient.

I don't find anyDuplicated(). Which package is it from?




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