Thanks a lot for the comments! I'll give the serveral alternatives a try to see if it gets me what I want.
Cheers, Janko > -----Ursprüngliche Nachricht----- > Von: Vitalie S. [mailto:[email protected]] > Gesendet: Mittwoch, 17. November 2010 13:51 > An: Janko Thyson > Cc: 'r-de...@r-project. org' > Betreff: Re: Reference classes: accessor functions via > 'getRefClass(...)$accessors(...)' > > "Janko Thyson" <[email protected]> writes: > > > Hi there, > > > > I'd like to choose between an "static" and "dynamic" access of a > reference > > class field, say 'a'. > > > > myObj <- getRefClass("Blabla")$new() > > > > Static: myObj$a > > > > Dynamic: myObj$a.get() where the function retrieves the > data > > from a database (or some other location), stores it to a buffer and > > optionally updates the static field value 'a'. > > > > I've set up such a method 'a.get()' where I can actually decide > between > > static and dynamic runmode (so the method also wraps the call > 'myObj$a' for > > the static runmode). > > > > Now I saw that setting up such accessor methods (get/set) is already > done > > for me if I use 'getRefClass("Blabla")$accessors(.)'. I just don't > > understand what exactly I have to do there, because this results in > an > > error: 'getRefClass("Blabla")$accessors("a")' > > > > Can anyone point me to the correct use of > 'getRefClass(.)$accessors(.)'? > > It works for me: > > X <- setRefClass("XXX", fields = list(a = "character")) > X$accessors("a") > X > # ... > # Class Methods: > # "callSuper", "export", "getA", "import", "initFields", "setA" > # ... > > accessors() convenience method creates setA and getA functions: > > x <- X$new() > x$getA > #Class method definition for method getA() > #function () > #a > #<environment: 02a198c0> > > HTH, > Vitalie. > > > > > > > Thanks a lot, > > > > Janko > > > > [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
