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From: murthy@algron.cs.cornell.edu (Chet Murthy)
Newsgroups: comp.lang.lisp
Subject: Re: Weak Reference in Common Lisp
Message-ID: <44659@cornell.UUCP>
Date: 17 Aug 90 14:43:20 GMT
References: <81084@aerospace.AERO.ORG> <5819@hplabsz.HPL.HP.COM>
Sender: nobody@cornell.UUCP
Distribution: usa
Organization: Cornell Univ. CS Dept. Ithaca NY
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mayer@hplabsz.HPL.HP.COM (Niels Mayer) writes:
>In article <81084@aerospace.AERO.ORG> srt@aero.org (Scott "TCB" Turner) writes:
>>Is there a mechanism in Common Lisp (specifically AKCL) for weak
>>reference?  By weak reference I mean a reference that won't prevent
>>garbage collection if no other references exist.
>>
>>						-- Scott Turner

>Sorry, I don't know, infact I'd like to find out more about weak
>references.

>Does anybody have any pointers to articles on this subject? What do weak
>references buy you? How do they affect performance? Why do you want them?
>How do you use them?

I know that there is such a facility (weak pointers) in the SML-NJ
(Standard ML of New Jersey) system.

--chet--