From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: alist-get in Emacs 24?
Date: Thu, 08 Oct 2015 18:14:17 +0200 [thread overview]
Message-ID: <87vbahjq1y.fsf@web.de> (raw)
In-Reply-To: fcc233e7-0e38-458c-8eaf-12efa985d8ed@default
Drew Adams <drew.adams@oracle.com> writes:
> Yes, with such (destructive) functions, if you have a variable
> pointing to the list (empty or not), you do need to re-set it
> to the result returned by the function. But that's all, AFAIK.
Our views just differ in whether you think of a `setter' as already
including the above (undoubtedly necessary) "res-set" operation or not.
I understood "setter" as the term is used for (generalized) variables
like in gv.el.
What I meant is that just passing by value is not sufficient, you have
to set a symbol's value somewhere. With regard to that, no, this is not
different from `delete'.
Michael.
prev parent reply other threads:[~2015-10-08 16:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 6:32 alist-get in Emacs 24? Marcin Borkowski
2015-10-02 6:39 ` Dmitry Gutov
2015-10-02 6:54 ` Marcin Borkowski
2015-10-02 7:34 ` Michael Heerdegen
2015-10-02 8:49 ` Marcin Borkowski
2015-10-03 3:05 ` Michael Heerdegen
2015-10-02 13:37 ` Stefan Monnier
2015-10-07 19:15 ` Marcin Borkowski
2015-10-07 20:45 ` Drew Adams
2015-10-08 8:21 ` Michael Heerdegen
2015-10-08 15:53 ` Drew Adams
2015-10-08 16:14 ` Michael Heerdegen [this message]
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