[Rd] self-referential representations in S4

[James Bullard]

I'm trying to do the following:

> setClass("MyNode", representation(parent = "MyNode"))
[1] "MyNode"
Warning message:
undefined slot classes in definition of "MyNode": parent(class "MyNode")

I scanned the docs, but found nothing. The representation function has no
problem, it's the setClass function which gives the warning.

What I'm trying to understand is why have the warning - it seems to work
just fine when I instantiate the class. Can we add an argument to the
setClass to suppress the warning?

This question was asked previously, but not answered in any satisfactory way:

http://r.789695.n4.nabble.com/Linked-List-in-R-td3303021.html

thanks, jim




R version 2.12.2 Patched (2011-03-09 r54717)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] h5r_1.1

loaded via a namespace (and not attached):
[1] tools_2.12.2