R help - Jun 2009 - Learning S3

Hi all,

Do you know of any good resources for learning how S3 works?  I've
some how become familiar with it by reading many small pieces, but now
that I'm teaching it to students I'm wondering if there are any good
resources that describe it completely, especially in a reader-friendly
way.  So far I've found:

 *
http://cran.r-project.org/doc/manuals/R-lang.html#Object_002doriented-programming
- it has most of the theory (although some bits are missing), but no
examples

 * page 33 of http://CRAN.R-project.org/doc/Rnews/Rnews_2004-1.pdf
shows how to create a simple object in both S3 and S4

What has helped you learn S3?

Regards,

Hadley

-- 
http://had.co.nz/

There is a section on Object Orientation in MASS (I have 2nd ed).

On Thu, Jun 18, 2009 at 12:06 PM, Hadley Wickham<hadley at rice.edu>
wrote:
> Hi all,
>
> Do you know of any good resources for learning how S3 works? ?I've
> some how become familiar with it by reading many small pieces, but now
> that I'm teaching it to students I'm wondering if there are any
good
> resources that describe it completely, especially in a reader-friendly
> way. ?So far I've found:
>
> ?*
http://cran.r-project.org/doc/manuals/R-lang.html#Object_002doriented-programming
> - it has most of the theory (although some bits are missing), but no
> examples
>
> ?* page 33 of http://CRAN.R-project.org/doc/Rnews/Rnews_2004-1.pdf
> shows how to create a simple object in both S3 and S4
>
> What has helped you learn S3?
>
> Regards,
>
> Hadley
>
> --
> http://had.co.nz/
>
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