On Fri, Jun 28, 2013 at 3:07 PM, Ben Bolker <bbol...@gmail.com> wrote:
> On 13-06-28 03:57 PM, Peter Meilstrup wrote:
> > Well, once you begin messing with eval.parent(), you _are_ telling R
> > what environment to work in, and things have the potential to go wrong
> > at that point because you're telling R to work in environment you don't
> > know anything about. Having to be explicit with a :: is just
> > compensating for an earlier thing you "shouldn't need to" be doing with
> > environments (in my opinion.)
>
> What would your preferred idiom be for this task (calling another
> function with all of the arguments of the previous call, without
> uglifying the call in the process)? I read your e-mail about making the
> comparison with S3 method dispatch, but to be honest I don't understand
> it very well -- don't know if those particular techniques are applicable
> here ... ?
>
> Ben
>
In the case of lmer you could do this:
delegate <- structure(NULL, class="delegate")
#' @S3method glmer delegate
glmer.delegate <- glmer
lmer <- function (formula, data, family = NULL, blahblahblah, ...) {
if (!is.null(family)) {
UseMethod("glmer", delegate)
}
#...
}
###
Peter
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