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| From: | Stefan Monnier |
| Subject: | Re: Arbitrary function: find the number(s) of expected arguments |
| Date: | Tue, 15 Mar 2016 23:47:34 -0400 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) |
> (if (accepts-2-arguments callback)
> (funcall callback computed-data
> this-value-gets-computed-as-side-effect)
> (funcall callback computed-data)))
(condition-case nil
(funcall callback computed-data this-value-gets-computed-as-side-effect)
(wrong-number-of-arguments (funcall callback computed-data)))
-- Stefan
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