From: "David A. Black" <dblack@...>
Date: 2004-06-12T03:41:31+09:00
Subject: Re: Array#rest

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.


David

-- 
David A. Black
dblack@wobblini.net