R help - Aug 2004 - Object oriented programming resources

Hi,

I'm looking for resources to read about the object-oriented features of R.

I have looked through the "Manuals" page on r-project.org.  The most 
useful of the documents seemed to be the "draft of the R language 
definition".  However it had only about 6 pages on the topic. 

I have also used Google, but my problem here is that "R" appears in a 
*lot* of webpages!  I tried limiting the search by using 
"site:r-project.org", but didn't find anything very useful.

Specifically, I'm trying to find information on "member variables"
(I
think that's the correct term), as I'd like to copy this concept from
C++:

class a {
  ...
private:
  int x;  // I think the term for this is a member variable
};

Thanks for your thoughts,

Matthew

The Bioconductor project posts a short tutorial "A guide to using S4
Objects" under "Developer Page" frame. I've found it useful. 

Note that R-s S4-classes approach to OOP is very different from the one
of C++ or Java. Yet you will find member vars, they are called slots.
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Matthew Walker
> Sent: Thursday, August 12, 2004 7:56 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] Object oriented programming resources
> 
> Hi,
> 
> I'm looking for resources to read about the object-oriented 
> features of R.
> 
> I have looked through the "Manuals" page on r-project.org.  
> The most useful of the documents seemed to be the "draft of 
> the R language definition".  However it had only about 6 
> pages on the topic. 
> 
> I have also used Google, but my problem here is that "R" appears
in a
> *lot* of webpages!  I tried limiting the search by using 
> "site:r-project.org", but didn't find anything very useful.
> 
> Specifically, I'm trying to find information on "member 
> variables" (I think that's the correct term), as I'd like to 
> copy this concept from C++:
> 
> class a {
>   ...
> private:
>   int x;  // I think the term for this is a member variable };
> 
> Thanks for your thoughts,
> 
> Matthew
> 
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