OK, apologies - on both fronts I obviously searched on the wrong terms. Sorry to waste your time.
Jon On 5 August 2011 18:22, John Chambers <j...@r-project.org> wrote: > There is also an item in the NEWS file: > > Field assignments in reference classes are now consistent with slots in > S4 classes: the assigned value must come from the declared class (if any) > for the field or from a subclass. > > On 8/5/11 7:24 AM, Simon Urbanek wrote: >> >> It's worth actually reading the list you post to ... >> >> http://r.789695.n4.nabble.com/Reference-classes-assignments-to-fields-td3708168.html >> >> >> On Aug 5, 2011, at 6:41 AM, Jon Clayden wrote: >> >>> Dear all, >>> >>> I've just had a package update bounced from CRAN because of a recent >>> change in R-devel which seems to affect the behaviour of the >>> initFields() reference class method. (The change must be very recent >>> because I tested the package on a week-old build of R-devel.) It seems >>> that the method no longer coerces its arguments to the expected type >>> of each field. For a simple example: >>> >>>> Foo<- setRefClass("Foo", fields=list(number="integer"), >>>> methods=list(initialize=function (number = NULL) >>>> initFields(number=number))) >>>> Foo$new() >>> >>> Error in function (value) : >>> invalid replacement for field ‘number’, should be from class >>> “integer” or a subclass (was class “NULL”) >>> >>> (This used to work, with "number" being set to "integer(0)"). In fact >>> it is now extremely strict, not even allowing a double literal which >>> is equal to an integer: >>> >>>> Foo$new(number=1) >>> >>> Error in function (value) : >>> invalid replacement for field ‘number’, should be from class >>> “integer” or a subclass (was class “numeric”) >>> >>> I don't see anything about this in the NEWS, so I was wondering if I >>> could get clarification on whether this is now the intended behaviour, >>> before I further modify the package. I must say that this will be a >>> bit of a pain to "correct"... >>> >>> All the best, >>> Jon >>> >>> ______________________________________________ >>> R-devel@r-project.org mailing list >>> https://stat.ethz.ch/mailman/listinfo/r-devel >>> >>> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
