[R] identical() versus sapply()

[Paulson, Ariel]

Sorry if this has been answered elsewhere, but I can't find any discussion of it.

Wondering why the following situation occurs (duplicated on 3.2.2 CentOS6 and 3.0.1 Win2k, so I don't think it is a bug):

> sapply(1, identical, 1)
[1] TRUE

> sapply(1:2, identical, 1)
[1] FALSE FALSE

> sapply(1:2, function(i) identical(as.numeric(i),1) )
[1]  TRUE FALSE

> sapply(1:2, function(i) identical(as(i,"numeric"),1) )
[1] FALSE FALSE

I have been unable to find anything different about the versions of "1" that identical() is not finding identical.

Thanks,
Ariel



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