Hi,
I started this post on bioc-devel but this seems to be more general:
https://stat.ethz.ch/pipermail/bioc-devel/2013-May/004311.html
See reproducible example from Martin below.
Thank you.
Renaud
-- Forwarded message --
From: Martin Morgan
Date: 7 May 2013 19:55
Subject: Re
No need for generic functions and methods. Just looking at the
hierarchy of the classes shows the problem.
With Martin's simplified version:
> library(PkgA)
> extends("A")
[1] "A"
> library(PkgB)
> extends("B")
[1] "B" "A"
> setClassUnion("C", c("matrix", "A"))
> extends("A")
[1] "A" "C"
> ext
I obviously cannot predict the implications as much as John, but would the
followings be solutions:
- setClassUnion looks up for subclasses of its elements and add them up,
and setClass('A', ...) would update the union classes of any superclass of
'A'. removeClass would need to do some cleanup, wh
The problem is not with setting up the union, but with updating the cached
version of the subclasses that are implicitly members of the union.
Think of it this way. Class "B" does not have a superclass "C" in its
incarnation on PkgB. Only dynamically in the situation you have created does
thi
