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Appending lists
From: |
henri-biard |
Subject: |
Appending lists |
Date: |
Tue, 15 Jun 2021 03:47:57 +0200 (CEST) |
>> Pierpaolo Bernardi wrote:
>> (defvar newlist
>> (append city district))
>> Emanuel Berg
> Looks - bad.
Now I am really getting wound up !
Should I use (append city district) or (list city district) ?
Using defvar seemed good enough for me.
Anyway, concatenating all the arguments in "append" make the result a list.
From: Emanuel Berg via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: Appending lists
Date: 15/06/2021 02:56:16 Europe/Paris
Pierpaolo Bernardi wrote:
> (defvar newlist
> (append city district))
Looks - bad.
Forget about the initvalue, here people will have to agree to
disagree tho. It makes development less "athletic" and fun,
and more confusing when debugging/optimization and so re-eval
start. Instead, use `defvar' to mute the byte-compiler then on
the next line use `setq'. IOM!
newlist - bad name
> Il giorno 14 giugno 2021, alle ore 18:40,
> henri-biard@francemel.fr ha scritto:
>
> I want to make a new list named newlist to be
>
> (append city district)
>
> and put the new list into a new list.
There are many ways to do that. For example
(setq list-one '(1 2)) ; (1 2)
(setq list-one-two-times (list list-one list-one)) ; ((1 2) (1 2))
(setq list-one '(1 2 3)) ; (1 2 3)
list-one-two-times ; ((1 2) (1 2)) <-- still
--
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- RE: [External] : Re: Appending lists, (continued)
- RE: [External] : Re: Appending lists, Drew Adams, 2021/06/16
- Re: [External] : Re: Appending lists, Emanuel Berg, 2021/06/16
- RE: [External] : Re: Appending lists, Drew Adams, 2021/06/16
- Re: [External] : Re: Appending lists, Emanuel Berg, 2021/06/16
- Re: [External] : Re: Appending lists, tomas, 2021/06/17
- [OFFTOPIC] Re: Appending lists, Stefan Monnier, 2021/06/17
- Re: [OFFTOPIC] Re: Appending lists, tomas, 2021/06/17
- Re: [External] : Re: Appending lists, Emanuel Berg, 2021/06/18
Re: Appending lists, Pierpaolo Bernardi, 2021/06/14
Re: Appending lists, Drew Adams, 2021/06/16
- Re: Appending lists, tomas, 2021/06/17
- Re: Appending lists, Emanuel Berg, 2021/06/18
- Re: Appending lists, Emanuel Berg, 2021/06/18
- Re: Appending lists, tomas, 2021/06/19
- Re: Appending lists, Emanuel Berg, 2021/06/19
- RE: [External] : Re: Appending lists, Drew Adams, 2021/06/19
- Re: [External] : Re: Appending lists, Emanuel Berg, 2021/06/20
- Re: [External] : Re: Appending lists, Emanuel Berg, 2021/06/20