From: Tianxiang Xiong <tianxiang.xiong@gmail.com>
To: Emacs developers <emacs-devel@gnu.org>
Subject: Performance issue w/ `cl-loop`s `collect...into`
Date: Sat, 7 Apr 2018 17:51:19 -0700 [thread overview]
Message-ID: <CACMkxix3sfb2-D-AT4Q9Wj5cQha+7Vs6nPTZQj8V7yRhhS0feA@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 414 bytes --]
The following runs nearly instantaneously:
(progn
(cl-loop for i in (number-sequence 0 130000)
collect (cons (number-to-string i) i))
:done)
This seems to take a long time (didn't wait for it to finish):
(progn
(cl-loop for i in (number-sequence 0 130000)
collect (cons (number-to-string i) i) into pairs)
:done)
Is this a known issue? I couldn't find anything in the bug tracker about it.
[-- Attachment #2: Type: text/html, Size: 3584 bytes --]
next reply other threads:[~2018-04-08 0:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-08 0:51 Tianxiang Xiong [this message]
2018-04-08 3:26 ` Performance issue w/ `cl-loop`s `collect...into` Clément Pit-Claudel
2018-04-08 5:56 ` Tianxiang Xiong
2018-04-08 6:12 ` Clément Pit-Claudel
2018-04-08 8:50 ` Tianxiang Xiong
2018-04-08 13:19 ` Clément Pit-Claudel
2018-04-08 16:07 ` Stefan Monnier
2018-04-08 19:58 ` Tianxiang Xiong
2018-04-08 21:13 ` Stefan Monnier
2018-04-08 23:29 ` Tianxiang Xiong
2018-04-09 1:10 ` Tianxiang Xiong
2018-04-09 1:59 ` Stefan Monnier
2018-04-09 2:16 ` Tianxiang Xiong
2018-04-09 2:20 ` Stefan Monnier
2018-04-09 3:34 ` Tianxiang Xiong
2018-04-09 3:38 ` Tianxiang Xiong
2018-04-09 12:07 ` Stefan Monnier
2018-04-09 12:22 ` Basil L. Contovounesios
2018-04-09 15:28 ` Tianxiang Xiong
2018-04-09 15:33 ` Tianxiang Xiong
2018-04-14 7:01 ` Tianxiang Xiong
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=CACMkxix3sfb2-D-AT4Q9Wj5cQha+7Vs6nPTZQj8V7yRhhS0feA@mail.gmail.com \
--to=tianxiang.xiong@gmail.com \
--cc=emacs-devel@gnu.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).