From: Lars Ingebrigtsen <larsi@gnus.org>
To: Ihor Radchenko <yantar92@gmail.com>
Cc: 56255@debbugs.gnu.org
Subject: bug#56255: 28.1.50; sxhash-equal does not change when object is modified
Date: Thu, 30 Jun 2022 11:06:34 +0200 [thread overview]
Message-ID: <871qv6frl1.fsf@gnus.org> (raw)
In-Reply-To: <87czerk4qo.fsf@localhost> (Ihor Radchenko's message of "Wed, 29 Jun 2022 20:56:31 +0800")
Ihor Radchenko <yantar92@gmail.com> writes:
> As for the hash tables and collisions. Are you sure that collisions are
> OK? Consider the following example:
>
> (setq a (avl-tree--create #'org-element--cache-compare))
> (avl-tree-enter a '(headline (:begin 2)))
> (setq tbl (make-hash-table :test #'equal))
> (puthash a 'value tbl)
> (gethash a tbl)
> (plist-put (nth 1 (avl-tree-first a)) :begin 10)
> (gethash a tbl) ;; the value does not change!
That has nothing to do with collisions -- you're free to alter a key as
much as you want. It's just a normal Lisp object.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2022-06-30 9:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-27 12:27 bug#56255: 28.1.50; sxhash-equal does not change when object is modified Ihor Radchenko
2022-06-27 22:56 ` Lars Ingebrigtsen
2022-06-27 23:00 ` Lars Ingebrigtsen
2022-06-28 12:58 ` Lars Ingebrigtsen
2022-06-29 1:58 ` Ihor Radchenko
2022-06-29 10:01 ` Lars Ingebrigtsen
2022-06-29 10:12 ` Ihor Radchenko
2022-06-29 10:15 ` Lars Ingebrigtsen
2022-06-29 12:33 ` Ihor Radchenko
2022-06-29 12:38 ` Lars Ingebrigtsen
2022-06-29 12:56 ` Ihor Radchenko
2022-06-30 9:06 ` Lars Ingebrigtsen [this message]
2022-06-30 11:16 ` Ihor Radchenko
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