From: Nikolaj Schumacher <me@nschum.de>
To: Nordlöw <per.nordlow@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: completing-read() on list of vectors
Date: Fri, 12 Sep 2008 19:58:44 +0200 [thread overview]
Message-ID: <m2wshhtfe3.fsf@nschum.de> (raw)
In-Reply-To: <728990ea-9650-49dc-b4c3-4f9578856039@8g2000hse.googlegroups.com> ("Nordlöw"'s message of "Fri\, 12 Sep 2008 03\:30\:53 -0700 \(PDT\)")
Nordlöw <per.nordlow@gmail.com> wrote:
> I guess I need to give it an explicit completion function (as second
> argument) to achieve lookups of list of vectors where for example
> "accumulate" is used as key and the return value is the whole list
> element (vector).
The easiest way would be just to duplicate the first element in a cons.
(a . [a b c d])
Or use a hash map.
Certainly, you could also write your own completion functions, but it
will be significantly slower, because it's written in lisp. (If speed
that's of any concern...)
> Why doesn't completing-read() already work on list of vectors where
> first vector element is a string aswell?
Unfortunately, there are few functions capable of working with vectors.
Consequently, They are rarely used. (Consequently, there are few
functions capable of working with them.)
regards,
Nikolaj Schumacher
prev parent reply other threads:[~2008-09-12 17:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-12 10:30 completing-read() on list of vectors Nordlöw
2008-09-12 11:19 ` Nordlöw
2008-09-12 17:58 ` Nikolaj Schumacher [this message]
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