From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Vladimir Sedach <vas@oneofus.la>
Cc: Michael Heerdegen <michael_heerdegen@web.de>,
Juanma Barranquero <lekktu@gmail.com>,
Stefan Kangas <stefankangas@gmail.com>,
Drew Adams <drew.adams@oracle.com>,
emacs-devel@gnu.org
Subject: Re: master 8f0f851: * lisp/autoarg.el: Use lexical binding.
Date: Wed, 29 Apr 2020 00:02:25 -0400 [thread overview]
Message-ID: <jwvd07r9caf.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87imhj2faz.fsf@t510.orion.oneofus.la> (Vladimir Sedach's message of "Tue, 28 Apr 2020 19:31:32 -0700")
> Conceptually, RESULT is a neat way to have the DOLIST/DOTIMES/DO
> expression evaluate to a useful value,
It's not. Putting the return value right after (wrapping the two in
a `progn` if needed) is a much neater solution, which is also visually
much better at clarifying what is returned.
The only potential usefulness of the RETURN part is to get access to the
"after-last" value of the iteration variable (which is the only
concrete difference between using RESULT or placing the result as
a separate expression after the iteration).
> Deprecating RESULT makes it harder to port Common Lisp code to Elisp.
I have tried to port a few Common Lisp codes to Elisp, and this kind of
syntactic rewrite is so trivial to handle (and the dotimes/dolist macros
could even tell you how to do them) that it doesn't even register in
comparison to the much harder work of dealing with library differences,
packages, reader macros, ...
Stefan
next prev parent reply other threads:[~2020-04-29 4:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200419004503.26161.91884@vcs0.savannah.gnu.org>
[not found] ` <20200419004504.C65772049B@vcs0.savannah.gnu.org>
2020-04-19 6:18 ` master 8f0f851: * lisp/autoarg.el: Use lexical binding Juanma Barranquero
2020-04-20 5:10 ` Stefan Kangas
2020-04-20 5:34 ` Michael Heerdegen
2020-04-20 11:06 ` Noam Postavsky
2020-04-20 13:52 ` Stefan Monnier
2020-04-20 14:55 ` Drew Adams
2020-04-20 16:32 ` Stefan Monnier
2020-04-28 2:14 ` Michael Heerdegen
2020-04-28 2:59 ` Strange compiler warning in `dotimes' (was: master 8f0f851: * lisp/autoarg.el: Use lexical binding.) Michael Heerdegen
2020-04-28 15:32 ` master 8f0f851: * lisp/autoarg.el: Use lexical binding Drew Adams
2020-04-29 0:53 ` Michael Heerdegen
2020-04-29 0:59 ` Drew Adams
2020-04-29 1:13 ` Michael Heerdegen
2020-04-29 1:23 ` Drew Adams
2020-04-29 2:31 ` Vladimir Sedach
2020-04-29 3:58 ` Michael Heerdegen
2020-04-29 4:21 ` Stefan Monnier
2020-04-29 18:33 ` Vladimir Sedach
2020-04-29 4:02 ` Stefan Monnier [this message]
2020-04-29 15:05 ` Noam Postavsky
2020-04-30 2:26 ` Richard Stallman
2020-05-16 3:21 ` Michael Heerdegen
2020-04-29 3:53 ` Stefan Monnier
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