[Rd] factorial() not here (PR#1194)
Prof Brian Ripley
ripley@stats.ox.ac.uk
Wed, 5 Dec 2001 16:09:34 +0000 (GMT)
On 5 Dec 2001, A.J. Rossini wrote:
> >>>>> "m" == maechler <maechler@stat.math.ethz.ch> writes:
>
> >>>>> "rmh" == rmh <rmh@surfer.sbm.temple.edu> writes:
>
> m> well, and where's the bug ? There are many more functions in
> m> S+ which are not in R. factorial() is not a blue book or white
> m> book function {of course!}; hence no direct reason to have it
> m> in R. Reversely, should we start sending bug reports to S-news
> m> or Insightful for R functions not existing in S+ ?
>
> Combine this with Brian's comment about Greg's concat masking an S
> function, and this is amusing.
>
> R-core can't have it both ways, emulating S when it pleases, and
> complaining when not! (at least Greg implemented it for future, so
> that we don't get the mandatory statement about volunteer projects!).
Eh? I don't find it amusing at all.
What I personally want to avoid is functions of the same name with
very different functionality in the two systems. It makes porting code
between them too error-prone. R-core has been adding S-compatibility a lot
recently, and Insightful are planning to add some R-compatibility, all of
which I see as positive.
*However*, Martin was complaining that this was sent in as a bug report.
I think that is fair comment: it was not marked as a feature request. I
do think it would be worth adding, but as 1.4.0 is in feature freeze, not
right now.
General comment: please mark feature requests as `for the wishlist' or
something similar when sending to R-bugs.
Brian
--
Brian D. Ripley, ripley@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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