From: Jens Egon Nyborg <jens@puggaard-nyborg.dk>
To: 75364@debbugs.gnu.org
Subject: bug#75364: Manual: Alist example does not work
Date: Sat, 4 Jan 2025 16:59:15 +0100 [thread overview]
Message-ID: <e21b8ece-f882-46f7-93d5-d750ceddd0a0@puggaard-nyborg.dk> (raw)
[-- Attachment #1: Type: text/plain, Size: 774 bytes --]
I run
(define capitals '(("New York" . "Albany")
("Oregon" . "Salem")
("Florida" . "Miami")))
followed by
(set! capitals
(assoc-set! capitals "Florida" "Tallahassee"))
and get
"ice-9/boot-9.scm:1676:22: In procedure raise-exception:
In procedure set-cdr!: Wrong type argument in position 1 (expecting
mutable pair): ("Florida" . "Miami")
Entering a new prompt. Type `,bt' for a backtrace or `,q' to continue."
(In geiser in emacs on Arch)
Warning: In my own code it actually worked on and off.
Work-around: Use
(define capitals (list (cons "New York" "Albany")
(cons "Oregon" . "Salem")
(cons "Florida" . "Miami")))
apparently quoted lists are not mutable!
[-- Attachment #2: Type: text/html, Size: 2815 bytes --]
next reply other threads:[~2025-01-04 15:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-04 15:59 Jens Egon Nyborg [this message]
2025-01-04 21:27 ` bug#75364: Manual: Alist example does not work dsmich
2025-01-04 23:34 ` lloda
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/guile/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=e21b8ece-f882-46f7-93d5-d750ceddd0a0@puggaard-nyborg.dk \
--to=jens@puggaard-nyborg.dk \
--cc=75364@debbugs.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.
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).