From: Lennart Borgman <lennart.borgman@gmail.com>
To: Nordlöw <per.nordlow@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Setting the nth element of a list
Date: Fri, 5 Jun 2009 00:35:06 +0200 [thread overview]
Message-ID: <e01d8a50906041535u430f69ffgad2fa98e6cb56c87@mail.gmail.com> (raw)
In-Reply-To: <8a7c4d36-195d-4517-827e-7fbeca7ae03f@r34g2000vba.googlegroups.com>
Use nthcdr
On Thu, Jun 4, 2009 at 11:08 PM, Nordlöw <per.nordlow@gmail.com> wrote:
> This simple example changes the second element in the list x:
>
> (setq x '(a nil c))
> (setcar (cdr x 'b)
>
> How do I generalize this to a function that sets (changes) the nth
> element of a list (for side effects only)?
>
> Thanks in advance,
> Nordlöw
>
next prev parent reply other threads:[~2009-06-04 22:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-04 21:08 Setting the nth element of a list Nordlöw
2009-06-04 22:06 ` Drew Adams
2009-06-04 22:35 ` Lennart Borgman [this message]
2009-06-05 2:25 ` Barry Margolin
2009-06-05 13:06 ` Nordlöw
2009-06-05 13:10 ` Nordlöw
2009-06-05 13:25 ` Pascal J. Bourguignon
2009-06-05 13:57 ` Nordlöw
2009-06-05 15:08 ` Pascal J. Bourguignon
2009-06-05 16:56 ` bigfaceworm
2009-06-06 6:01 ` Miles Bader
2009-06-05 20:51 ` Barry Margolin
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