Marc Schwartz <MSchwartz <at> MedAnalytics.com> writes: : : On Wed, 2004-07-21 at 15:53, hadley wickham wrote: : > There are a few notes about difference between the R implementation : > and the book at http://developer.r-project.org/methodsPackage.html : > : > I found the hardest thing to get to grips in R was method calling - : > using multiple dispatch (totally different to what I'm used to from : > Java, Python etc.). I found this tutorial : > (http://www.gwydiondylan.org/gdref/tutorial.html, the sections on : > generic functions and multiple-dispatch) very useful. However, it is : > for another programming language, and although the method and class : > creation process feels very similar to R, the syntax is quite : > different. There is definitely scope for a similarly structured : > introduction to S4 classes in R. : > : > Hadley : : I have not done any S4 coding yet, but two references that may be of : interest are: : : "Converting Packages to S4" : by Doug Bates : R News Vol 3, No. 1, June 2003 : http://cran.r-project.org/doc/Rnews/Rnews_2003-1.pdf : : and : : "S4 Classes and Methods" : by Fritz Leisch : useR! 2004 Keynote Lecture : Slides available at: : http://www.ci.tuwien.ac.at/Conferences/useR-2004/Keynotes/Leisch.pdf : : HTH, : : Marc Schwartz
Also: S4 Classes in 15 pages, more or less http://www.bioconductor.org/develPage/guidelines/programming/S4Objects.pdf ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
