From: Drew Adams <drew.adams@oracle.com>
To: Emanuel Berg <embe8573@student.uu.se>, help-gnu-emacs@gnu.org
Subject: RE: Lists composed of equal number and kind of elements
Date: Mon, 27 Jul 2015 18:07:43 -0700 (PDT) [thread overview]
Message-ID: <3b829dc7-8903-4db3-aeef-98e1b1949e45@default> (raw)
In-Reply-To: <87egjt41q9.fsf@nl106-137-147.student.uu.se>
> (defun set-equal (list-1 list-2)
> (and (null (cl-set-exclusive-or list-1 list-2))
> (= (length list-1)
> (length list-2)) ))
All you need to test is (cl-set-exclusive-or list-1 list-2).
(a a a b b), (b b a), and (b a) all represent the same set.
IOW, neither order nor duplication matters.
next prev parent reply other threads:[~2015-07-28 1:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-27 7:11 Lists composed of equal number and kind of elements Andreas Röhler
2015-07-27 13:17 ` Drew Adams
2015-07-27 15:35 ` Andreas Röhler
2015-07-27 23:31 ` Emanuel Berg
2015-07-27 23:52 ` John Mastro
2015-07-27 23:55 ` Fwd: " John Mastro
2015-07-27 23:56 ` Emanuel Berg
[not found] ` <mailman.7498.1438041516.904.help-gnu-emacs@gnu.org>
2015-07-28 14:34 ` Barry Margolin
2015-07-28 21:11 ` Emanuel Berg
[not found] ` <mailman.7571.1438118111.904.help-gnu-emacs@gnu.org>
2015-07-28 21:37 ` Pascal J. Bourguignon
2015-07-29 2:16 ` Emanuel Berg
2015-07-29 7:21 ` Marcin Borkowski
2015-07-29 22:57 ` Emanuel Berg
2015-07-29 23:04 ` Emanuel Berg
[not found] ` <mailman.7584.1438136310.904.help-gnu-emacs@gnu.org>
2015-07-29 4:32 ` Pascal J. Bourguignon
2015-07-29 5:31 ` Rusi
2015-07-29 5:43 ` Pascal J. Bourguignon
2015-07-29 6:20 ` Rusi
2015-07-29 15:45 ` Pascal J. Bourguignon
2015-07-29 7:18 ` Marcin Borkowski
2015-07-29 10:06 ` Andreas Röhler
2015-07-29 22:45 ` Emanuel Berg
2015-07-28 1:07 ` Drew Adams [this message]
2015-07-28 21:10 ` Emanuel Berg
[not found] ` <mailman.7570.1438117959.904.help-gnu-emacs@gnu.org>
2015-07-28 21:34 ` Pascal J. Bourguignon
2015-07-28 21:37 ` Emanuel Berg
[not found] <mailman.7450.1437981102.904.help-gnu-emacs@gnu.org>
2015-07-28 17:10 ` Pascal J. Bourguignon
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