GNU bug report logs - #26540
25.2; [PATCH] Add cl-set-equal to test for set equality

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Package: emacs;

Reported by: Damien Cassou <damien <at> cassou.me>

Date: Mon, 17 Apr 2017 09:17:01 UTC

Severity: wishlist

Tags: patch

Found in version 25.2

Done: Nicolas Petton <nicolas <at> petton.fr>

Bug is archived. No further changes may be made.

Full log

Message #8 received at 26540 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Damien Cassou <damien <at> cassou.me>, 26540 <at> debbugs.gnu.org
Subject: RE: bug#26540: 25.2; [PATCH] Add cl-set-equal to test for set equality
Date: Mon, 17 Apr 2017 06:55:20 -0700 (PDT)

> This patch adds cl-seq-equal to test whether two lists have the
> same elements. I.e., if every element of LIST1 also appears in
> LIST2 and if every element of LIST2 also appears in LIST1.

Common Lisp (and the Emacs emulation) already has set
functions that do this - `[cl-]set-exclusive-or', for
example.

https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node152.html
This bug report was last modified 8 years and 13 days ago.

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