From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: alist-get in Emacs 24?
Date: Fri, 02 Oct 2015 09:37:50 -0400 [thread overview]
Message-ID: <jwvr3ldmm3h.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: 877fn5hgg8.fsf@web.de
> There was assoc.el in prior Emacsen (and it's still lying around in
> lisp/obsolete). `aput' is its setter for alists. Works great, but is
> obsolete.
"Works great" only if your needs are very modest. E.g. it's
terribly inefficient, and it relies on dynamic scoping.
As for the (gv-define-expander alist-get ...), you could just blindly
copy that definition into your package. Of course that'll only work for
Emacsen with gv.el. For older Emacsen, you'll have to use
define-setf-expander, which indeed works a bit differently from
gv-define-expander. For the very reason that I invented
gv-define-expander, I'd rather not try and come up with the equivalent
define-setf-expander.
Stefan
next prev parent reply other threads:[~2015-10-02 13:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 6:32 alist-get in Emacs 24? Marcin Borkowski
2015-10-02 6:39 ` Dmitry Gutov
2015-10-02 6:54 ` Marcin Borkowski
2015-10-02 7:34 ` Michael Heerdegen
2015-10-02 8:49 ` Marcin Borkowski
2015-10-03 3:05 ` Michael Heerdegen
2015-10-02 13:37 ` Stefan Monnier [this message]
2015-10-07 19:15 ` Marcin Borkowski
2015-10-07 20:45 ` Drew Adams
2015-10-08 8:21 ` Michael Heerdegen
2015-10-08 15:53 ` Drew Adams
2015-10-08 16:14 ` Michael Heerdegen
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