From: "Juanma Barranquero" <lekktu@gmail.com>
To: Nordlöw <per.nordlow@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Indexing a vector
Date: Wed, 10 Sep 2008 17:57:50 +0200 [thread overview]
Message-ID: <f7ccd24b0809100857v2df06dcdwaaa1aff60e1e6f5c@mail.gmail.com> (raw)
In-Reply-To: <b41b96b6-1b43-49fb-8ded-6c8c1d44f268@x35g2000hsb.googlegroups.com>
On Wed, Sep 10, 2008 at 16:53, Nordlöw <per.nordlow@gmail.com> wrote:
> How do index an element in a vector?
(aref [a b c d] 2) => c
> nth() works only for lists.
Yes, `nth' is a list operation.
> Why on earth isn't such a basic operator compatible with both lists
> and vectors (sequences)?
Because it is a list operation. For the generic sequence operator, try `elt':
(elt '(a b c d) 2) => c
(elt [a b c d] 2) => c
(elt "abcd" 2) => 99
Juanma
next prev parent reply other threads:[~2008-09-10 15:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-10 14:53 Indexing a vector Nordlöw
2008-09-10 15:53 ` Drew Adams
2008-09-10 15:57 ` Juanma Barranquero [this message]
2008-09-10 16:52 ` Ted Zlatanov
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