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From: gjc@paradigm.com
Newsgroups: comp.lang.lisp
Subject: Re: Weak Reference in Common Lisp
Message-ID: <276@paradigm.com>
Date: 22 Aug 90 21:06:15 GMT
References: <81084@aerospace.AERO.ORG> <41670@think.Think.COM>
Distribution: usa
Organization: Paradigm Associates Inc, Cambridge MA
Lines: 12

In article <41670@think.Think.COM>, barmar@think.com (Barry Margolin) writes:
> 
> Some Common Lisp implementations ...
>  If the only reference to an object is as the key in such a
> hash table it may be removed from the hash table (along with the value) and
> may then be GCed.

You *have* to mention that that would only be reasonable for EQ hash tables.

Not for EQUAL hash tables, or any other predicate you can think of.

-gjc