s4 - usage of setOldClass in R -


i have created union class

setclassunion("numericornull",members=c("numeric", "null"))
getclass("numericornull")

then need use new class in slot of object. @ moment build package error. have found can use setoldclass:

setoldclass("numericornull")

however, affecting definition of class:

getclass("numericornull")

and code doesn't work anymore

invalid object slot "myslot" in class "myclass": got class "numeric", should or extend class "numericornull"

any idea?


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