From: Joost Kremers <joostkremers@fastmail.fm>
To: "Óscar Fuentes" <ofv@wanadoo.es>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Appending to a list
Date: Sun, 13 Dec 2020 23:37:53 +0100 [thread overview]
Message-ID: <874kkpjok6.fsf@fastmail.fm> (raw)
In-Reply-To: <87sg89v1f7.fsf@telefonica.net>
On Sun, Dec 13 2020, Óscar Fuentes wrote:
> Joost Kremers <joostkremers@fastmail.fm> writes:
>> On Sun, Dec 13 2020, steve-humphreys@gmx.com wrote:
>>> Or does one customarily use other constructs for
>>> adding to a list?
>>
>> `push` is what I would use:
>>
>> (push "Swift" bird)
>
> This does not append.
Not in the Elisp sense, no. But in e.g., Python, `append` is the function that's
used to add an element to a list and the OP indicated that that's what he was
after.
>> (require 'cl-lib)
>> (cl-pushnew "Swift" bird)
>
> Isn't that the same as
>
> (add-to-list bird "Swift" t)
The doc string of `add-to-list` says that it should really only be used on
configuration variables in one's init file. For some reason (that I admittedly do
not understand), `add-to-list` shouldn't be used on lexical variables.
--
Joost Kremers
Life has its moments
next prev parent reply other threads:[~2020-12-13 22:37 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-13 20:46 Appending to a list steve-humphreys
2020-12-13 21:03 ` Joost Kremers
2020-12-13 21:30 ` Óscar Fuentes
2020-12-13 21:46 ` steve-humphreys
2020-12-13 22:37 ` Joost Kremers [this message]
2020-12-13 23:08 ` Joost Kremers
2020-12-13 22:43 ` Stefan Monnier
2020-12-13 23:25 ` steve-humphreys
2020-12-13 23:33 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 0:19 ` steve-humphreys
2020-12-14 0:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 2:54 ` steve-humphreys
2020-12-14 2:58 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 3:23 ` steve-humphreys
2020-12-14 4:07 ` Michael Heerdegen
2020-12-14 4:16 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 4:23 ` steve-humphreys
2020-12-14 4:50 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 5:13 ` steve-humphreys
2020-12-14 6:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 6:25 ` steve-humphreys
2020-12-14 5:28 ` steve-humphreys
2020-12-14 6:26 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 10:25 ` steve-humphreys
2020-12-14 5:55 ` steve-humphreys
2020-12-14 6:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-14 17:22 ` Michael Heerdegen
2020-12-14 18:25 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-15 0:17 ` steve-humphreys
2020-12-15 1:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-13 21:41 ` steve-humphreys
2020-12-13 23:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
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