Re: Using methods on (setf foo)?
From: Bruno Haible (bruno_at_clisp.org)
Date: 10/21/04
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Date: 21 Oct 2004 15:29:31 GMT
Peter Seibel <peter@javamonkey.com> asked:
>
> On the other hand, mightn't it violate the principle of
> least astonishment to have a simple "assignment" have such dramatic
> side effects?
No, that's essentially why the accessor methods are part of generic
functions: So that programmers can add bookkeeping updates.
People who want just the "simple assignment" can use
(setf (slot-value playlist 'songs) ...)
as a last resort.
Bruno
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