From: Robert Klemme <bob.news@...>
Date: 2004-06-12T04:08:40+09:00
Subject: Re: Array#rest


"David A. Black" <dblack@wobblini.net> schrieb im Newsbeitrag
news:Pine.LNX.4.44.0406111136400.19371-100000@wobblini...
> Hi --
>
> On Fri, 11 Jun 2004, Patrick Gundlach wrote:
>
> > Hello David,
> >
> > >> then we can even define Array#cadr and so on ;-)
> > >
> > > What problem would this solve?
> >
> > $USERDEFINED problem. In Lisp there are car, cdr and often(?) cddr
> > cadr,... which access members of lists (cadr acesses the second
> > element, cddr the third, fourth .... element). Absolutely no need to
> > put this into ruby itself though. Its more a mnemonic and shorter to
> > type. Example (setq mylist '((1 a))) then (car (cdr 'mylist)) is the
> > same as  (caar 'mylist) which is 1.
>
> I know about it from Lisp, just wondering how/whether it would enhance
> Ruby.  I can see 'rest' as a companion to 'first' and 'last', but
> going down the road of car, cdr and friends seems like a language
> pastiche.

Sounds like a good suggestion for an RAA project "rlisp" to make lispers
feel at home with Ruby. :-)

    robert