Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!welch
From: welch@tut.cis.ohio-state.edu (Arun Welch)
Newsgroups: comp.lang.lisp
Subject: Re: pointers in Lisp
Message-ID: <33722@tut.cis.ohio-state.edu>
Date: 3 Feb 89 20:32:08 GMT
References: <1710@cps3xx.UUCP>
Organization: Ohio State Univ Computer & Info Science
Lines: 25

In article <1710@cps3xx.UUCP>, artzi@cpsvax.cps.msu.edu (Ytshak Artzi - CPS) writes:
> Problem:
> 
>       I need to implement (in Common Lisp) a structure with pointers. I will
> use Pascal jargon to best describe it:
> 
>            element : record
>                         data : some_type
>                         p1   :pointer_to_element
>                         :
>                         :
>                         pk   :pointer_to_element
>                      end;
> 

Seeing as how this is lisp, why dont you just use a list?  Unless your CL is 
incredibly inefficient, mapping over a list of 10 elements is gonna be plenty
fast, and you'll probably take up less storage than the array.

...arun

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Arun Welch
Lisp Systems Programmer, Lab for AI Research, Ohio State University
welch@cis.ohio-state.edu