From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: problems with Emacs 28
Date: Sat, 24 Oct 2020 11:46:08 +0200 [thread overview]
Message-ID: <87pn58gdnj.fsf@web.de> (raw)
In-Reply-To: 87r1poddpj.fsf@zoho.eu
Emanuel Berg via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org> writes:
> The byte-compiler, and the docstring, tells me I should use `map-put!'
> as `map-put' is decrepated. However when I do that, I get a
> "map-not-inplace" error.
Yes, the replacement is not totally equivalent to the deprecated
function (if it would be, it would not make sense to introduce a
replacement at all).
If you read the docstring of `map-put!' you'll see why you get the
error.
You will probably rather want to use `setf' with an `alist-get' place
expression. Yes, the recommendation was not a good one in your case.
> What is that bang (explication mark) syntax BTW?
That comes from the scheme tradition: it is used for functions that
modify something (state), unlike "pure" functions that "only" calculate
a return value. E.g. `+', `car' vs. `setcar!' etc., you get it.
Regards,
Michael.
next prev parent reply other threads:[~2020-10-24 9:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-23 16:50 problems with Emacs 28 Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-23 17:33 ` Jean Louis
2020-10-23 18:02 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-23 18:00 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-24 1:55 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-24 12:56 ` Stefan Monnier
2020-10-24 12:57 ` Stefan Monnier
2020-10-24 9:46 ` Michael Heerdegen [this message]
2020-10-24 17:00 ` Drew Adams
2020-10-24 19:26 ` Michael Heerdegen
2020-10-24 22:11 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-24 22:08 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-25 12:13 ` Michael Heerdegen
2020-10-25 14:15 ` Drew Adams
2020-10-27 0:29 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-27 10:22 ` Michael Heerdegen
2020-10-28 16:21 ` Jens C. Jensen
2020-10-28 17:07 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-28 17:18 ` Stefan Monnier
2020-10-31 18:26 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-11-01 13:51 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-23 18:16 ` Eli Zaretskii
2020-10-23 18:22 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-23 18:44 ` Stefan Monnier
2020-10-24 0:13 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-23 19:09 ` Gregory Heytings via Users list for the GNU Emacs text editor
2020-10-24 0:14 ` Emanuel Berg via Users list for the GNU Emacs text editor
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