From: Navy Cheng <navych@126.com>
To: help-gnu-emacs@gnu.org
Subject: Re: How to use a symbol and its value to create alist?
Date: Wed, 12 Aug 2015 09:35:48 +0800 [thread overview]
Message-ID: <20150812013548.GA22098@debian> (raw)
In-Reply-To: <barmar-5F4F0E.19211511082015@88-209-239-213.giganet.hu>
On Tue, Aug 11, 2015 at 07:21:15PM -0500, Barry Margolin wrote:
> In article <mailman.8135.1439301205.904.help-gnu-emacs@gnu.org>,
> Navy Cheng <navych@126.com> wrote:
>
> > For example:
> >
> > (setq a 1)
> > (setq b 2)
> > (setq c 3)
> >
> > How can I a alist, like:
> > ((a . 1) (b . 2) (c .3))
> >
> > The value of a, b and c may change, so don't do this like
> > (setq tree ((a . 1) (b . 2) (c .3)))
> >
> > Thank you!
>
> I suspect this is what you want:
>
> (setq tree (list (cons 'a a) (cons 'b b) (cons 'c c)))
>
> or using backquote:
>
> (setq tree `((a . ,a) (b . ,b) (c . ,c)))
>
Thank you for your help, This is what I want.
next prev parent reply other threads:[~2015-08-12 1:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.8135.1439301205.904.help-gnu-emacs@gnu.org>
2015-08-11 14:39 ` How to use a symbol and its value to create alist? Pascal J. Bourguignon
2015-08-12 1:57 ` Navy Cheng
2015-08-12 0:21 ` Barry Margolin
2015-08-12 1:35 ` Navy Cheng [this message]
2015-08-11 13:52 Navy Cheng
2015-08-11 15:21 ` Ian Zimmerman
2015-08-12 1:46 ` Navy Cheng
[not found] ` <mailman.8160.1439343998.904.help-gnu-emacs@gnu.org>
2015-08-12 2:12 ` Pascal J. Bourguignon
2015-08-12 2:18 ` Pascal J. Bourguignon
2015-08-12 5:06 ` Navy Cheng
[not found] ` <mailman.8170.1439355992.904.help-gnu-emacs@gnu.org>
2015-08-12 7:03 ` Pascal J. Bourguignon
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