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From: Lars Brinkhoff <lars@nocrew.org>
Subject: Re: Object identity
Date: 22 Oct 2003 09:35:37 +0200	[thread overview]
Message-ID: <85llrd912u.fsf@junk.nocrew.org> (raw)
In-Reply-To: nbglb.147$lK3.30@news.level3.com

Barry Margolin <barry.margolin@level3.com> writes:
> Lars Brinkhoff  <lars@nocrew.org> wrote:
> >I have no desire to get the not-quite-unique identifiers in Common
> >Lisp.  I want to implement PRINT-UNREADABLE-OBJECT in Emacs Lisp.
> I understand that.  My point was that just as PRINT-UNREADABLE-OBJECT has
> to be part of the implementation in CL, your requested object-identity
> function would have to be part of the Emacs Lisp implementation.

Well, unless real storage addresses are needed, a weak hash table
could also to a way to implement object-identity, right?

> I don't think there's any way to write this function in Emacs Lisp,
> it needs to be a primitive in the C code that implements the Lisp
> interpreter.

I might try to add such a primitive in the future.

Thanks to you and Stefan Monnier for your thoughtful replies.

-- 
Lars Brinkhoff,         Services for Unix, Linux, GCC, HTTP
Brinkhoff Consulting    http://www.brinkhoff.se/

  reply	other threads:[~2003-10-22  7:35 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 ` Object identity Stefan Monnier
2003-10-21 16:55   ` 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 [this message]
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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