From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Matt Armstrong <matt@rfc20.org>
Cc: "Gerd Möllmann" <gerd.moellmann@gmail.com>, emacs-devel@gnu.org
Subject: Re: noverlay branch
Date: Thu, 06 Oct 2022 08:08:24 -0400 [thread overview]
Message-ID: <jwvzge940pv.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87r0zld0de.fsf@rfc20.org> (Matt Armstrong's message of "Wed, 05 Oct 2022 21:47:25 -0700")
> I see you removed some of the null->parent trick just today. I like
> that idea. It is realtively easy to use actual NULL instead of a
> sentinel NULL in tree algorithms, and I think on modern processors this
> works out for the better.
The change I made only made it so the sentinel's fields are either
read-only or write-only, which means the sentinel is not used to
propagate information and is thus not a global state.
Whether using NULL is worse or better than using a sentinel, I don't
know, and I think the current code is fine in this respect. If someone
wants to change it to use NULL, feel free, but it's not on my todo list.
Stefan
next prev parent reply other threads:[~2022-10-06 12:08 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-25 22:38 noverlay branch Stefan Monnier
2022-09-25 22:50 ` Lars Ingebrigtsen
2022-09-25 22:56 ` Stefan Monnier
2022-09-26 2:52 ` Ihor Radchenko
2022-09-26 3:17 ` Stefan Monnier
2022-09-26 6:11 ` Eli Zaretskii
2022-09-26 13:08 ` Ihor Radchenko
2022-09-26 15:59 ` Eli Zaretskii
[not found] ` <87v8ovdosz.fsf@localhost>
2022-10-08 6:57 ` Eli Zaretskii
2022-10-09 3:25 ` Matt Armstrong
2022-10-09 4:30 ` Eli Zaretskii
2022-10-09 3:23 ` Matt Armstrong
2022-10-09 3:47 ` Stefan Monnier
2022-10-13 12:09 ` Ihor Radchenko
2022-09-29 18:12 ` Stefan Monnier
2022-09-27 5:12 ` Matt Armstrong
2022-09-27 6:53 ` Eli Zaretskii
2022-09-27 17:31 ` Matt Armstrong
2022-09-27 18:45 ` Stefan Monnier
2022-09-28 23:09 ` Stefan Monnier
2022-09-29 14:54 ` Gerd Möllmann
2022-09-29 21:36 ` Stefan Monnier
2022-09-30 5:20 ` Gerd Möllmann
2022-10-06 4:47 ` Matt Armstrong
2022-10-06 5:43 ` Gerd Möllmann
2022-10-07 4:11 ` Matt Armstrong
2022-10-07 4:34 ` Gerd Möllmann
2022-10-07 13:33 ` Stefan Monnier
2022-10-07 14:29 ` Gerd Möllmann
2022-10-07 14:51 ` Stefan Monnier
2022-10-07 15:12 ` Gerd Möllmann
2022-10-07 17:12 ` Stefan Monnier
2022-10-07 14:56 ` Stefan Monnier
2022-10-07 15:59 ` Matt Armstrong
2022-10-07 15:34 ` Matt Armstrong
2022-10-06 12:08 ` Stefan Monnier [this message]
2022-09-27 8:39 ` Gerd Möllmann
2022-09-27 9:38 ` Eli Zaretskii
2022-10-06 20:41 ` Matt Armstrong
2022-10-07 16:51 ` Matt Armstrong
2022-10-07 18:28 ` Stefan Monnier
2022-10-08 23:33 ` Matt Armstrong
2022-10-09 3:44 ` Matt Armstrong
2022-10-09 4:12 ` Stefan Monnier
2022-10-09 15:34 ` Stefan Monnier
2022-10-10 2:57 ` Matt Armstrong
2022-10-10 6:24 ` Eli Zaretskii
2022-10-10 16:26 ` Matt Armstrong
2022-10-10 14:44 ` Stefan Monnier
2022-10-11 3:46 ` Matt Armstrong
2022-10-11 4:09 ` Stefan Monnier
2022-10-11 18:02 ` Matt Armstrong
2022-10-11 18:59 ` Stefan Monnier
2022-10-12 5:18 ` Matt Armstrong
2022-10-12 18:02 ` Stefan Monnier
2022-10-12 22:26 ` Matt Armstrong
2022-10-13 4:03 ` Stefan Monnier
2022-10-09 23:47 ` Stefan Monnier
2022-10-10 0:05 ` Emanuel Berg
2022-10-10 16:27 ` Matt Armstrong
2022-10-10 16:33 ` Matt Armstrong
2022-10-10 18:32 ` Matt Armstrong
2022-10-11 16:06 ` Stefan Monnier
2022-10-12 17:33 ` Matt Armstrong
2022-10-13 3:59 ` Stefan Monnier
2022-10-16 21:53 ` Matt Armstrong
2022-10-23 4:49 ` Matt Armstrong
2022-10-24 9:14 ` Stefan Kangas
2022-10-24 16:21 ` Matt Armstrong
2022-10-24 12:51 ` Eli Zaretskii
2022-10-25 20:57 ` Dmitry Gutov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=jwvzge940pv.fsf-monnier+emacs@gnu.org \
--to=monnier@iro.umontreal.ca \
--cc=emacs-devel@gnu.org \
--cc=gerd.moellmann@gmail.com \
--cc=matt@rfc20.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).