Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!pasteur!ucbvax!ucbarpa.Berkeley.EDU!edward
From: edward@ucbarpa.Berkeley.EDU (Edward Wang)
Newsgroups: comp.lang.lisp
Subject: Re: pointers in Lisp
Message-ID: <27884@ucbvax.BERKELEY.EDU>
Date: 3 Feb 89 18:42:44 GMT
References: <1710@cps3xx.UUCP>
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: edward@ucbarpa.Berkeley.EDU.UUCP (Edward Wang)
Organization: University of California, Berkeley
Lines: 22

In article <1710@cps3xx.UUCP> artzi@cpsvax.cps.msu.edu (Ytshak Artzi - CPS) writes:
<      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;
<
<REM: k is a constant chosen (by me) not bigger than 10.
<
<. . .
<          Please don't propose an array of pointers with a flag randomly
<       chosen between 1 and 10.

And may we ask why not?

How about not having a size field at all but use array-dimension
when you need to know?