From: Emanuel Berg <embe8573@student.uu.se>
To: help-gnu-emacs@gnu.org
Subject: Re: How to delete all nil properties from a plist?
Date: Sun, 02 Aug 2015 03:32:44 +0200 [thread overview]
Message-ID: <87twsiv5j7.fsf@nl106-137-147.student.uu.se> (raw)
In-Reply-To: 87mvya3bij.fsf@mbork.pl
Marcin Borkowski <mbork@mbork.pl> writes:
>> Hi all, so I'm still using plists, though I'm less
>> and less sure that they are actually better than
>> alists for my use-case. Now I need to delete all
>> properties whose value is nil. I'm using this
>> function:
Try this:
(require 'cl)
(defun plist-drop-nil-props (l)
(let((new)
(prop nil) )
(cl-loop for x in l
do (if (or (setq prop (not prop)) x)
(setq new (append new (list x)))
(setq new (butlast new))))
new))
(plist-drop-nil-props
'(nil nil a 1 b 2 c nil d nil e 5 g nil nil nil) ) ; (a 1 b 2 e 5)
--
underground experts united
http://user.it.uu.se/~embe8573
next prev parent reply other threads:[~2015-08-02 1:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-01 22:03 How to delete all nil properties from a plist? Marcin Borkowski
2015-08-01 22:11 ` Marcin Borkowski
2015-08-02 1:32 ` Emanuel Berg [this message]
[not found] ` <mailman.7753.1438479312.904.help-gnu-emacs@gnu.org>
2015-08-02 1:36 ` Pascal J. Bourguignon
2015-08-02 1:50 ` Emanuel Berg
2015-08-02 3:55 ` Rusi
2015-08-02 16:21 ` Pascal J. Bourguignon
[not found] ` <mailman.7754.1438480361.904.help-gnu-emacs@gnu.org>
2015-08-02 16:24 ` Pascal J. Bourguignon
2015-08-05 23:08 ` Emanuel Berg
[not found] ` <mailman.7864.1438816202.904.help-gnu-emacs@gnu.org>
2015-08-05 23:30 ` Pascal J. Bourguignon
2015-08-05 23:49 ` Emanuel Berg
2015-08-06 0:30 ` Emanuel Berg
2015-08-06 1:05 ` John Mastro
2015-08-06 1:07 ` John Mastro
[not found] ` <mailman.7867.1438818687.904.help-gnu-emacs@gnu.org>
2015-08-06 2:32 ` Pascal J. Bourguignon
2015-08-07 22:21 ` Emanuel Berg
[not found] ` <mailman.7869.1438821124.904.help-gnu-emacs@gnu.org>
2015-08-06 2:40 ` Pascal J. Bourguignon
2015-08-07 22:32 ` Emanuel Berg
[not found] ` <mailman.7963.1438986782.904.help-gnu-emacs@gnu.org>
2015-08-08 3:56 ` Pascal J. Bourguignon
2015-08-09 1:34 ` Emanuel Berg
[not found] ` <mailman.7996.1439084206.904.help-gnu-emacs@gnu.org>
2015-08-09 2:18 ` Pascal J. Bourguignon
2015-08-09 2:28 ` Emanuel Berg
[not found] ` <mailman.7749.1438467076.904.help-gnu-emacs@gnu.org>
2015-08-01 23:46 ` Pascal J. Bourguignon
[not found] <mailman.7748.1438466648.904.help-gnu-emacs@gnu.org>
2015-08-01 23:43 ` Pascal J. Bourguignon
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