From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: plist-put: destructive?
Date: Fri, 20 Jan 2017 22:25:27 -0500 [thread overview]
Message-ID: <jwvy3y5xfjk.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: 87mvelzgrr.fsf@ericabrahamsen.net
> So what's the ambiguity? Are there circumstances where a simple
> plist-put isn't going to modify the original plist?
Yes, when the plist is empty.
BTW, in recent Emacsen, you can use
(setf (alist-get K AL) V)
and it works even when the alist is nil (but it requires AL to be
a valid *place* rather than an arbitrary expression). You could make
something similar for plist-get.
Stefan
next prev parent reply other threads:[~2017-01-21 3:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-20 19:13 plist-put: destructive? Eric Abrahamsen
2017-01-21 3:25 ` Stefan Monnier [this message]
2017-01-21 10:25 ` tomas
2017-01-21 16:41 ` Eric Abrahamsen
2017-01-21 17:13 ` Drew Adams
2017-01-22 0:50 ` Eric Abrahamsen
2017-01-22 10:08 ` Philipp Stephani
2017-01-22 13:10 ` Eric Abrahamsen
2017-01-22 17:30 ` Stefan Monnier
2017-01-23 0:31 ` Eric Abrahamsen
2017-01-23 9:01 ` tomas
2017-01-21 23:03 ` Stefan Monnier
2017-01-22 1:15 ` Eric Abrahamsen
2017-01-21 8:13 ` tomas
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