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Re: Adding many elements to a list
From: |
Pascal J. Bourguignon |
Subject: |
Re: Adding many elements to a list |
Date: |
Fri, 18 Sep 2009 17:13:30 +0200 |
User-agent: |
Gnus/5.101 (Gnus v5.10.10) Emacs/22.2 (gnu/linux) |
David Kastrup <dak@gnu.org> writes:
> pjb@anevia.com (Pascal J. Bourguignon) writes:
>
>> David Kastrup <dak@gnu.org> writes:
>>
>>> pjb@informatimago.com (Pascal J. Bourguignon) writes:
>>>
>>>> So better use (require 'cl) (push new-item list)
>>>> or (cons new-item list)
>>>> or (append (list new-items...) list)
>>>
>>> (require 'cl) is quite unnecessary for all of the mentioned
>>> alternatives.
>>
>> Not on emacs version < 23.
>
> Nonsense. push&pop were officially announced in Emacs 21.1. I may be
> mistaken, but I think they have been there even earlier.
>
> And the other options certainly were there from the earliest versions of
> GNU Emacs.
C-h f push RET
push is a Lisp macro in `cl.el'.
(push x place)
Insert x at the head of the list stored in place.
Analogous to (setf place (cons x place)), though more careful about
evaluating each argument only once and in the right order. place may
be a symbol, or any generalized variable allowed by `setf'.
[back]
M-x emacs-version RET
GNU Emacs 22.2.1 (x86_64-unknown-linux-gnu, X toolkit) of 2008-08-21 on simias
--
__Pascal Bourguignon__
- Adding many elements to a list, Nordlöw, 2009/09/18
- Re: Adding many elements to a list, Pascal J. Bourguignon, 2009/09/18
- Re: Adding many elements to a list, David Kastrup, 2009/09/18
- Re: Adding many elements to a list, Pascal J. Bourguignon, 2009/09/19
- Re: Adding many elements to a list, David Kastrup, 2009/09/18
- Re: Adding many elements to a list, Thierry Volpiatto, 2009/09/18
- Re: Adding many elements to a list,
Pascal J. Bourguignon <=
- Re: Adding many elements to a list, Andreas Politz, 2009/09/19
- Re: Adding many elements to a list, David Kastrup, 2009/09/22
- Re: Adding many elements to a list, Pascal J. Bourguignon, 2009/09/22
- Re: Adding many elements to a list, David Kastrup, 2009/09/22
- Re: Adding many elements to a list, Pascal J. Bourguignon, 2009/09/22
- Re: Adding many elements to a list, David Kastrup, 2009/09/22
- Re: Adding many elements to a list, Samuel Wales, 2009/09/28
Re: Adding many elements to a list, David Kastrup, 2009/09/18