From: <tomas@tuxteam.de>
To: help-gnu-emacs@gnu.org
Subject: Re: plist-put: destructive?
Date: Mon, 23 Jan 2017 10:01:47 +0100 [thread overview]
Message-ID: <20170123090147.GA19549@tuxteam.de> (raw)
In-Reply-To: <jwvd1ffuhrw.fsf-monnier+gmane.emacs.help@gnu.org>
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On Sun, Jan 22, 2017 at 12:30:49PM -0500, Stefan Monnier wrote:
> > The code I'm working has many repeated clauses looking like:
> >
> > (when thing1
> > (setq the-plist (plist-put the-plist :thing thing1)))
>
> FWIW, I've found that such code can often advantageously be turned
> into a non-side-effecting form like:
>
> (let ((the-plist
> (nconc
> (when thing1 (list :key1 thing1))
> (when thing2 (list :key2 thing2))
> ...)))
Thanks for this one! I positively know I've been struggling for
something like that, only to come up with a far clumsier variant.
- -- t
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next prev parent reply other threads:[~2017-01-23 9:01 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
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 [this message]
2017-01-21 23:03 ` Stefan Monnier
2017-01-22 1:15 ` Eric Abrahamsen
2017-01-21 8:13 ` tomas
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