John Chambers <[EMAIL PROTECTED]> writes:
> As for:
>
> setClass("kid4", contains = "mom")
>
> this is currently a meaningless class: It's not virtual but it has no
> meaningful prototype. My preference would be a change that makes this a
> virtual class, as the programmer probably intended (
thank you John, as always, for your thoughtful responses. (i've been
teaching my children to play chess, which probably isn't that
different an experience ;) one further comment and a related (maybe)
bug report.
comment:
setClass("mom")
setClass("kid2", contains = c("mom", "VIRTUAL"))
wi
IMO, the recommended version is:
setClass("kid2", contains = c("mom", "VIRTUAL"))
because it's the clearest, using the representation argument only for
defining slots. Better yet, if your virtual classes don't have any
slots defined, use setClassUnion() for "mom", with the other classes
membe
I am having some trouble creating a hierarchy of virtual classes
(akin to the class structure in the 'Matrix' package). I think they
arise from my not understanding the best way to specify virtual
subclasses of a virtual class. please see questions below code.
setClass("mom")
setClass("ki
