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From: Barry Margolin <barmar@alum.mit.edu>
To: help-gnu-emacs@gnu.org
Subject: Re: Setting the nth element of a list
Date: Fri, 05 Jun 2009 16:51:37 -0400	[thread overview]
Message-ID: <barmar-F1AA7A.16513705062009@mara100-84.onlink.net> (raw)
In-Reply-To: b775c362-a37c-4d38-bce1-8de6922acbd3@b1g2000vbc.googlegroups.com

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In article 
<b775c362-a37c-4d38-bce1-8de6922acbd3@b1g2000vbc.googlegroups.com>,
 Nordlöw <per.nordlow@gmail.com> wrote:

> How do I accomplish the same with arrays? Using aref I guess. Here is
> my mockup that doesn't yet do what I want:
> 
> (defun setnthref (n array x)
>   "Set N:th element of ARRAY to X for side effects only."
>   (set (aref array n) x))

There's already a built-in function aset that does exactly that, except 
it takes its arguments in a different order.  Why do you need your own 
function?

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***


      parent reply	other threads:[~2009-06-05 20:51 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
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 [this message]

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