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From: Michael Heerdegen <michael_heerdegen@web.de>
To: Eric Abrahamsen <eric@ericabrahamsen.net>
Cc: emacs-devel@gnu.org
Subject: Re: Help with recursive destructive function
Date: Thu, 07 Jun 2018 03:13:21 +0200	[thread overview]
Message-ID: <87bmcn8klq.fsf@web.de> (raw)
In-Reply-To: <87in6v2zfc.fsf@ericabrahamsen.net> (Eric Abrahamsen's message of "Wed, 06 Jun 2018 17:49:43 -0700")

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> I thought that was exactly what "destructive" meant!?

Sometimes, but in general it only means that the original data can be
changed (destroyed) for better performance.  See

  (info "(elisp) Sets And Lists")

and the description of `delq' for some background.


Michael.



  reply	other threads:[~2018-06-07  1:13 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-05  1:04 Help with recursive destructive function Eric Abrahamsen
2018-05-05  1:18 ` Stefan Monnier
2018-05-05  1:37   ` Michael Heerdegen
2018-05-05 15:41     ` Michael Heerdegen
2018-05-06 17:29       ` Eric Abrahamsen
2018-05-06 19:29         ` Michael Heerdegen
2018-05-06 19:34           ` Eric Abrahamsen
2018-05-06 18:27       ` Eric Abrahamsen
2018-05-07  2:01         ` Michael Heerdegen
2018-05-07  3:01           ` Eric Abrahamsen
2018-05-07  4:16             ` Clément Pit-Claudel
2018-05-07 14:14               ` Michael Heerdegen
2018-05-07 16:26               ` Stefan Monnier
2018-05-07 16:52                 ` Eric Abrahamsen
2018-05-08 13:15                   ` Michael Heerdegen
2018-05-08 18:42                     ` Eric Abrahamsen
2018-05-08 19:03                       ` Clément Pit-Claudel
2018-05-08 19:41                         ` Eric Abrahamsen
2018-05-10  1:52                       ` Michael Heerdegen
2018-05-10 17:08                         ` Michael Heerdegen
2018-05-11  2:12                           ` Eric Abrahamsen
2018-05-14 14:27                             ` Michael Heerdegen
2018-05-14 16:57                               ` Eric Abrahamsen
2018-05-14 23:16                                 ` Michael Heerdegen
2018-05-15  0:28                                   ` Eric Abrahamsen
2018-07-28 20:52                                   ` Eric Abrahamsen
2018-07-28 23:46                                     ` Michael Heerdegen
2018-07-28 23:59                                       ` Eric Abrahamsen
2018-07-29  0:09                                         ` Michael Heerdegen
2018-06-04 22:28                               ` Eric Abrahamsen
2018-06-05  0:23                                 ` Michael Heerdegen
2018-06-06 21:04                                   ` Eric Abrahamsen
2018-06-06 21:58                                     ` Michael Heerdegen
2018-06-06 22:10                                       ` Eric Abrahamsen
2018-06-06 23:10                                         ` Eric Abrahamsen
2018-06-06 23:30                                           ` Michael Heerdegen
2018-06-07  0:49                                             ` Eric Abrahamsen
2018-06-07  1:13                                               ` Michael Heerdegen [this message]
2018-06-06 23:18                                         ` Michael Heerdegen
2018-06-07 13:59                                     ` Stefan Monnier
2018-06-07 16:51                                       ` Eric Abrahamsen

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