Dear UseRs,
A simple class inheritance example:
setClass("test",representation(a="numeric"))
setMethod("initialize","test",
function(.Object,x,...){
print("Initialization!!!")
callNextMethod(.Object,a=x,...)
})
new("test",x=23)
[1] "Initialization!!!"
An object of class "test"
Slot "a":
[1] 23
setClass("test2",contains="test",representation(b="integer"))
[1] "Initialization!!!"
Error in .nextMethod(.Object, a = x, ...) :
argument "x" is missing, with no default
When trying to define a new class "test2" above, "initialize" method for "test" is called (??? looks like a bug to me) and naturally argument "x" is not found. Thus I can not create a subclass for "test".
I could not find anything in documentation.
Thanks,
Vitalie.
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