From: David Kastrup <dak@gnu.org>
Subject: Re: How many parameters does an elisp function take?
Date: Wed, 16 Feb 2005 22:02:21 +0100 [thread overview]
Message-ID: <x5vf8s43s2.fsf@lola.goethe.zz> (raw)
In-Reply-To: 37hpndF5cn882U1@individual.net
Kevin Rodgers <ihs_4664@yahoo.com> writes:
> Alan Mackenzie wrote:
>> Is it possible to determine at run time how many parameters an elisp
>> function takes? For example, I'd like to write something like:
>> (how-many-params 'null)
>> and have it evaluate to 1. Or something like that. Together with
>> some
>> reasonable convention for indicating &optional and &rest arguments.
>
> I would start with eldoc-function-arglist.
For built-in functions, subr-arity might help.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
next prev parent reply other threads:[~2005-02-16 21:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-16 20:11 How many parameters does an elisp function take? Alan Mackenzie
2005-02-16 20:45 ` Kevin Rodgers
2005-02-16 21:02 ` David Kastrup [this message]
2005-02-16 23:56 ` Kevin Rodgers
2005-02-18 13:59 ` Stefan Monnier
2005-02-18 17:43 ` Alan Mackenzie
2005-02-22 14:41 ` Stefan Monnier
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