[Rd] UseMethod call with no arguments

From: Henrik Bengtsson <hb_at_maths.lth.se>
Date: Tue 16 Nov 2004 - 05:53:35 EST

Dear R developers,

I will ask a very straightforward question concerning UseMethod's future, because people depending on my code wonder what will happen to it next.

In R v2.0.1 NEWS it says

    o	The undocumented use of UseMethod() with no argument is now
	formally deprecated. 

and in the R v2.0.1 help(UseMethod) it says

  'UseMethod' accepts a call with no arguments and tries to deduce    the generic from the context. This was undocumented on the help    page and is now deprecated. It is allowed but 'strongly    discouraged' in S-PLUS.

The short question is: UseMethod() with no arguments is deprecated. Typically, after making something deprecated it will later become defunct. Do you have any plans for when this will happen? Are we talking months, years or in reality never? A version number?

Second, in R v2.0.0 NEWS there was nothing on making UseMethod() without arguments deprecated (the latest patched version I have is dated October 21st). As I believe a rather big step has been taken, I am somewhat surprised that I haven't seen it discussed. Was there a discussion taking place elsewhere that I missed, or is it an "obvious" update?

Finally, many thanks for making R (the software, the help, the community, ...) to what it is.

Best wishes

Henrik Bengtsson

Dept. of Mathematical Statistics @ Centre for Mathematical Sciences Lund Institute of Technology/Lund University, Sweden (+2h UTC) +46 46 2229611 (off), +46 708 909208 (cell), +46 46 2224623 (fax) h b @ m a t h s . l t h . s e, http://www.maths.lth.se/~hb/

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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Tue Nov 16 06:00:51 2004

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