Reference Classes: shortcut like 'isS4' for Ref Classes?
As it says on the help page ?ReferenceClasses: All reference classes inherit from the class "envRefClass" So, is(x, "envRefClass") And, less well documented but less typing: is(x, "refClass") also works.
On 6/6/11 9:48 AM, Janko Thyson wrote:
Dear list,
is there a shortcut-function to check whether a class is a Reference
Class or not? There's something like this for S4 classes
('isS4(object)'), but I couldn't find anything regarding Ref Classes.
Currently, I'm doing it this way, which is a bit clumsy:
A <- setRefClass("A", fields=list(X="numeric"))
a <- A$new()
isRefClass <- function(object, ...){
return(getClass(class(object))@class == "refClassRepresentation")
# getRefClass(class(object))@class == "refObjectGenerator"
}
isRefClass(a)
[1] TRUE
Regards,
Janko
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