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 ______________________________________________ [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
