From: dblack@...
Date: 2007-01-13T04:32:21+09:00
Subject: Re: RCR again (Integer#succ!, Integer#pred!)

Hi --

On Sat, 13 Jan 2007, Robert Dober wrote:

> I am definitely in an RCR mood ;)
>
> Well as I was reading the archives and Jim Weirich's guidlines I saw an
> accepted RCR for Integer#odd? Integer#even?
> I always define Integer#pred for myself it seems so trivial that I did not
> bother the list *on purpose*
> I filed the RCR right away.
> Sorry for breaking the rule it seemed appropriate.
>
> But I was considering a second RCR and this one does by no means allow not
> to consult the community.
>
> I would also like to have
> Integer#pred! and Integer#succ! doing the "obvious" of course.
>
> x = 41
> x.succ! => 42
> x   => 42
>
> What do you think ?

I don't consider that obvious at all.  Integers are immutable, and
variables aren't objects -- so it doesn't fit the model.

That's also why Matz has never put x++ in the language.


David

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