As Henrik Bengtsson has just demonstrated on R-help,
it is currently valid to have *the* empty class name.
E.g.,
----------------------------------
print. <- function(x, ...) {
cat("Empty class ", x,"\n")
invisible(x)
}
x <- 1:2; class(x) <- ""
----------------------------------
works:
> x
Empty class 1 2
I see that it also works in S+6 but still do wonder if this is
not rather an accident than a feature.
Martin Maechler <[EMAIL PROTECTED]> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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