From: Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: Object identity
Date: Tue, 21 Oct 2003 15:09:06 GMT [thread overview]
Message-ID: <jwvznfu7hqu.fsf-monnier+gnu.emacs.help@vor.iro.umontreal.ca> (raw)
In-Reply-To: mailman.2049.1066716515.21628.help-gnu-emacs@gnu.org
> (Would emacs-devel be a more appropriate list to post this?)
> Is there a function, say object-identity, in Emacs Lisp that maps an
> object to a unique value (other than the object itself)? For example,
I don't think there's such a thing, although it'd be easy to add given the
current non-copying GC. On another hand, I'm wondering what you want it
for. The only use I know of for such a feature is to implement a hash-table
with a cheap hash function, but obviously, that's not your goal since that
is already provided.
Stefan
next parent reply other threads:[~2003-10-21 15:09 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.2049.1066716515.21628.help-gnu-emacs@gnu.org>
2003-10-21 15:09 ` Stefan Monnier [this message]
2003-10-21 16:55 ` Object identity Stefan Monnier
2003-10-21 19:00 ` Lars Brinkhoff
[not found] ` <mailman.2095.1066762882.21628.help-gnu-emacs@gnu.org>
2003-10-21 19:27 ` Barry Margolin
2003-10-21 19:49 ` Lars Brinkhoff
[not found] ` <mailman.2101.1066765792.21628.help-gnu-emacs@gnu.org>
2003-10-21 19:56 ` Barry Margolin
2003-10-22 7:35 ` Lars Brinkhoff
2003-10-21 15:44 ` Barry Margolin
2003-10-21 16:09 ` Stefan Monnier
2003-10-21 16:19 ` Barry Margolin
2003-10-21 16:50 ` Stefan Monnier
2003-10-21 17:19 ` Barry Margolin
2003-10-21 17:42 ` Lars Brinkhoff
[not found] ` <mailman.2089.1066758667.21628.help-gnu-emacs@gnu.org>
2003-10-21 19:59 ` Stefan Monnier
2003-10-21 20:13 ` Lars Brinkhoff
[not found] ` <mailman.2104.1066767237.21628.help-gnu-emacs@gnu.org>
2003-10-21 21:22 ` Stefan Monnier
2003-10-21 21:39 ` Barry Margolin
2003-10-21 6:07 Lars Brinkhoff
2003-10-26 17:30 ` jan
2003-10-26 22:45 ` jan
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