[Rd] best reference on generics
maechler at stat.math.ethz.ch
Mon Feb 9 10:18:15 CET 2009
>>>>> "SpG" == Spencer Graves <spencer.graves at prodsyse.com>
>>>>> on Mon, 02 Feb 2009 12:42:52 -0800 writes:
SpG> Hello, All: What would you say is the best succinct
SpG> reference to cite on use of generic functions,
SpG> especially S3 generics?
In a very strict sense, S3 generics don't exist;
S4 ones do.
Less strictly, an R function that uses UseMethod() is an
?UseMethod is a pretty good reference,
and BTW, contains
>> This scheme is called _S3_ (S version 3). For new projects, it is
>> recommended to use the more flexible and robust _S4_ scheme
>> provided in the 'methods' package.
[so for a forthcoming book and package, it's pity that S4 had
not been used...
Yes, now I go hide before the flames roar at me !
Martin Maechler, ETH Zurich
SpG> I want to add an appropriate citation on this to
SpG> a forthcoming book in the Springer "useR!" series
SpG> (discussing the use of the 'fda' package, which uses
SpG> the S3 standard).
SpG> Thanks, Spencer Graves
SpG> R-devel at r-project.org mailing list
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