R help - Jul 2003 - Testing for numeric(0)

Hi all, Can anyone tell me how to test for numeric(0) ?
Best regards
S?ren H?jsgaard

S?ren H?jsgaard wrote:
> Hi all, Can anyone tell me how to test for numeric(0) ?
 > foo <- numeric(0)
 > length(foo)
[1] 0
 > is.numeric(foo)
[1] TRUE

  so:

  is.numeric0 <- function(x){length(x)==0 & is.numeric(x)}

seems to do the trick....

Baz

On Thu, Jul 17, 2003 at 10:16:28AM +0200, S?ren H?jsgaard
wrote:
> Hi all, Can anyone tell me how to test for numeric(0) ?
> Best regards
> S?ren H?jsgaard


foo <- numeric(0)
identical(foo, numeric(0))



Hopin' it helps,


L.


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