From: Eli Zaretskii <eliz@gnu.org>
To: Ihor Radchenko <yantar92@posteo.net>
Cc: emacs-devel@gnu.org
Subject: Re: Should `indirect-function' be preferred over `fboundp'?
Date: Thu, 20 Jul 2023 10:42:27 +0300 [thread overview]
Message-ID: <83wmyv2fmk.fsf@gnu.org> (raw)
In-Reply-To: <87h6pzxdof.fsf@localhost> (message from Ihor Radchenko on Thu, 20 Jul 2023 07:08:48 +0000)
> From: Ihor Radchenko <yantar92@posteo.net>
> Date: Thu, 20 Jul 2023 07:08:48 +0000
>
> (defalias 'yant/foo 'yant/bar)
> (fboundp 'yant/foo) ; => t
> (funcall 'yant/foo) ; => ERROR: Symbol function definition is void: yant/foo
>
> In contrast, `indirect-function' does a better job determining whether a
> given symbol can be called as a function:
>
> (indirect-function 'yant/foo) ; => nil
>
> Is it something widely known?
The ELisp manual says:
-- Function: fboundp symbol
This function returns ‘t’ if the symbol has an object in its
function cell, ‘nil’ otherwise. It does not check that the object
is a legitimate function.
So this is at least documented.
next prev parent reply other threads:[~2023-07-20 7:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-20 7:08 Should `indirect-function' be preferred over `fboundp'? Ihor Radchenko
2023-07-20 7:42 ` Eli Zaretskii [this message]
2023-07-20 8:23 ` Ihor Radchenko
2023-07-20 7:47 ` Andreas Schwab
2023-07-20 8:25 ` Ihor Radchenko
2023-07-20 13:02 ` Alan Mackenzie
2023-07-20 13:08 ` Ihor Radchenko
2023-07-21 1:08 ` Michael Heerdegen
2023-07-21 6:07 ` Ihor Radchenko
2023-07-22 2:49 ` Michael Heerdegen
2023-07-22 10:51 ` Ihor Radchenko
2023-07-23 2:37 ` Michael Heerdegen
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