Hi CH,

Check

?is.element
?"%in%"

HTH,
Jorge


On Mon, Dec 13, 2010 at 9:48 AM, C.H. <> wrote:

> Dear R users,
>
> Suppose I have an vector like this:
>
> animal <- c("Tiger","Panda")
>
> I would like to know is there any function that check for the
> existence of certain item in a vector.
>
> e.g.
>
> > func("Tiger",animal) # check for the existence of "Tiger"
> TRUE
> > func("Acacia",animal)  #Acacia is not an item of the animal vector
> FALSE
>
> I know that it can be done by for loop. But I would like to know is
> there any built-in function for that.
>
> Thank you very much.
>
> CH
>
> --
> CH Chan
>
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>

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