I've been trying to use methods for reference classes via the notation
"[[...]]" (X[["doSomething"]] rather than X$doSomething), but it failed to
work. However, I did find that if you use the usual "$" notation first,
"[[...]]" can be used afterwards. The following simple example illustrates the
point:
> setRefClass("Number", + fields = list(+ value = "numeric"+ ),+
> methods = list(+ addOne = function() {+ value <<- value + 1+ }+
> )+ )> X <- new("Number", value = 1)> X[["value"]][1] 1
> X[["addOne"]]()Error: attempt to apply non-function> class(X[["addOne"]]) #
> NULL[1] "NULL"
> class(X$addOne)[1] "refMethodDef"attr(,"package")[1] "methods"
> X[["addOne"]]()> X[["value"]][1] 2> class(X[["addOne"]])[1]
> "refMethodDef"attr(,"package")[1] "methods"
Is this a bug?
Chad Goymer
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
