[R] is.variable ? is.initialized ?

[Rolf Turner]

On 15/05/2009, at 11:34 AM, myshare wrote:

> thanx, I forgot something how then do you check if u have something  
> like this :
>
> exists("xxx$array")
>
> this does not seem to work !!

Of course not.

I don't think what you want is built in.  But you can easily
cobble something together:

	!is.na(match("array",names(xxx)))

will do it, I think.  (Not tested.)

	cheers,

		Rolf Turner

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