Hi!
To specify a prototype in the setClass declaration is a great feature.
But prototype seems no to work for slots of the "super" class.
eg. The following code is declaring first the super class "List". This class has a
slot "content".
The class "AtomList" inherits from it and I would like to set content="Atom" by
prototype(content="Atom").
But after new("AtomList") is called the slot content is empty as you can see running
the code below.
setClass("List"
,representation(
uniq="logical"
,content="character" ##### would
like to set this when declaring the inheriting class.
,names="character")
,contains="list"
,prototype(uniq=FALSE)
)
setClass("AtomList"
,contains="List"
,prototype(content="Atom") ## would like to
specify this
)
new("AtomList")
An object of class "AtomList"
list()
Slot "uniq":
[1] FALSE
Slot "content":
character(0) #######<-still
not specified even if provided in prototype.
Slot "names":
character(0)
Version:
R : Copyright 2004, The R Foundation for Statistical Computing
Version 2.0.0 alpha (2004-09-14), ISBN 3-900051-07-0
or
R1.9.1 patched.
/E
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