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From: Drew Adams <drew.adams@oracle.com>
To: Emanuel Berg <moasenwood@zoho.eu>
Cc: "Help-Gnu-Emacs \(help-gnu-emacs@gnu.org\)" <help-gnu-emacs@gnu.org>
Subject: RE: [External] : Re: Appending lists
Date: Wed, 16 Jun 2021 17:54:30 +0000	[thread overview]
Message-ID: <SA2PR10MB4474BEAE3839A4CFD5DB9FADF30F9@SA2PR10MB4474.namprd10.prod.outlook.com> (raw)
In-Reply-To: <87tulxu4bc.fsf@zoho.eu>

> "Copy", you mean to send the value as an argument?

I mean create a separate object.
`copy-sequence' does that, for example.

> What's a "deep copy"?

It's a copy where every part of the object
is separate, not `eq' to the corresponding
parts of the object that you copied.

For a cons, which is a tree, it would mean
that neither car nor cdr are shared between
the original and the copy, and that the same
is true for any cars and cdrs that are,
themselves, conses.

IOW, the tree is separate/independent from
its copy.  When that's the case you can
change any parts of either without affecting
the other.

`C-h f copy-tree' describes the difference
between what it does (a deep copy) and what
`copy-sequence' does (shallow copy - doesn't
copy cars.



  reply	other threads:[~2021-06-16 17:54 UTC|newest]

Thread overview: 103+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 16:36 Appending lists Pierpaolo Bernardi
2021-06-14 16:40 ` henri-biard
2021-06-14 18:21   ` Alexandr Vityazev
2021-06-15  0:46     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-15  8:27       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-15  9:18         ` tomas
2021-06-16  1:11           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16  7:28             ` tomas
2021-06-16  9:13               ` Jean Louis
2021-06-16  9:32                 ` tomas
2021-06-16 10:55                   ` Jean Louis
2021-06-16 16:44                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 18:00                       ` Using Emacs for business Jean Louis
2021-06-16 22:59                         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 23:39                           ` Jean Louis
2021-06-17  0:16                             ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-17  7:09                               ` Jean Louis
2021-07-06  3:22                                 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-06 20:23                                   ` Jean Louis
2021-07-06 20:41                                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-07  0:18                                       ` Jean Louis
2021-06-16  9:19               ` Appending lists Jean Louis
2021-06-16  9:35                 ` tomas
2021-06-16 10:57                   ` Jean Louis
2021-06-16 16:55                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 11:16                 ` Yuri Khan
2021-06-16 11:30                   ` Jean Louis
2021-06-16 11:54                     ` tomas
2021-06-16 17:31                       ` Jean Louis
2021-06-16 23:13                         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 23:41                           ` Jean Louis
2021-06-16 13:01                     ` Philip Kaludercic
2021-06-16 16:59                       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 17:36                       ` Jean Louis
2021-06-16 18:54                         ` tomas
2021-06-16 21:24                           ` Philip Kaludercic
2021-06-16 23:25                             ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-17  7:16                               ` tomas
2021-06-17  7:14                             ` tomas
2021-06-16 23:24                           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 23:19                         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 11:49                   ` [OT] Underground (was: Appending lists) tomas
2021-06-19  0:10                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 16:54                 ` Appending lists Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 18:49                   ` tomas
2021-06-16 21:40                     ` Jean Louis
2021-06-16 22:35                       ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-16 23:02                         ` Jean Louis
2021-06-17  0:00                           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 23:44                         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-17  7:20                           ` tomas
2021-06-16 23:39                       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 23:31                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 14:22               ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-16 15:11                 ` tomas
2021-06-16 15:31                   ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-16 15:48                     ` tomas
2021-06-16 23:04                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-17  2:41                       ` [OFFTOPIC] " Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-17  6:09                         ` Arthur Miller
2021-06-17  6:29                           ` Stefan Monnier
2021-06-17 23:53                             ` Arthur Miller
2021-06-18 14:15                               ` Stefan Monnier
2021-06-19  0:04                                 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-19  1:20                                   ` Eduardo Ochs
2021-06-19  2:18                                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-19  2:43                                   ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-21 15:07                                 ` Arthur Miller
2021-06-17  7:51                         ` tomas
2021-06-17  7:50                       ` tomas
2021-06-18 23:47                         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-19  2:35                           ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-19  6:52                             ` tomas
2021-06-16 23:03                 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 16:42               ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 16:55                 ` [External] : " Drew Adams
2021-06-16 17:06                   ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 17:54                     ` Drew Adams [this message]
2021-06-16 23:49                       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-17  7:54                         ` tomas
2021-06-17 12:41                           ` [OFFTOPIC] " Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-17 14:19                             ` tomas
2021-06-18 23:55                           ` [External] : " Emanuel Berg via Users list for the GNU Emacs text editor
  -- strict thread matches above, loose matches on Subject: below --
2021-06-16 14:16 Drew Adams
2021-06-16 17:03 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-16 18:00   ` Drew Adams
2021-06-17  3:18 Drew Adams
2021-06-17  7:48 ` tomas
2021-06-18 23:50   ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-19  6:57     ` tomas
2021-06-19 21:31       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-19 22:07         ` [External] : " Drew Adams
2021-06-20 19:50           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 19:58             ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 20:10               ` Jean Louis
2021-06-20 20:27                 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 19:59             ` Jean Louis
2021-06-20 20:22               ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 20:42               ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 20:49                 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 21:49                   ` Jean Louis
2021-06-20 22:54                     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 23:30                       ` Jean Louis
2021-06-21  0:29                         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 21:46                 ` Jean Louis
2021-06-20 22:09             ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-20 23:04               ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-20 23:10                 ` Emanuel Berg via Users list for the GNU Emacs text editor

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