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From: Drew Adams <drew.adams@oracle.com>
To: Juri Linkov <juri@jurta.org>,
	"Basil L. Contovounesios" <contovob@tcd.ie>
Cc: Lars Ingebrigtsen <larsi@gnus.org>,
	4136@debbugs.gnu.org, Eli Barzilay <eli@barzilay.org>
Subject: bug#4136: 23.1; delete-pair
Date: Mon, 16 Nov 2020 13:37:09 -0800 (PST)	[thread overview]
Message-ID: <92b5e40b-6d21-48a1-905b-4b89265687d7@default> (raw)
In-Reply-To: <87y2j110oo.fsf@mail.linkov.net>

> The closest function that I found is:
> 
>   (cl-plusp NUMBER)
>   Return t if NUMBER is positive.
> 
> but I'm not sure why it would be better than using just (> number 0).

It's there to emulate a Common Lisp predicate, `plusp'.

Why does Common Lisp have `plusp'?  Presumably for
use with higher-order functions, to not have to use
a lambda form etc.

(mapcar #'plusp '(4 -3.1 0 42))
(mapcar (lambda (x) (> x 0)) '(4 -3.1 0 42))





  reply	other threads:[~2020-11-16 21:37 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-13  6:22 bug#4136: 23.1; delete-pair Eli Barzilay
2009-08-13  9:53 ` martin rudalics
2009-08-13 23:29   ` Juri Linkov
2009-08-14  1:18     ` Eli Barzilay
2009-08-14 15:50       ` Stefan Monnier
2009-08-14 22:45       ` Juri Linkov
2009-08-15  1:46         ` Eli Barzilay
2009-08-15 23:06           ` Juri Linkov
2009-08-16  0:00             ` Eli Barzilay
2009-08-17  0:46               ` Juri Linkov
2009-08-17  3:13                 ` Eli Barzilay
2009-08-17 21:17                   ` Juri Linkov
2009-08-18  7:13                     ` martin rudalics
2009-08-19  0:48                       ` Juri Linkov
2020-09-14 14:08                       ` Lars Ingebrigtsen
2020-09-14 19:12                         ` Juri Linkov
2020-09-15 12:27                           ` Lars Ingebrigtsen
2020-09-15 18:07                             ` Juri Linkov
2020-09-17 14:45                               ` Lars Ingebrigtsen
2020-09-18  8:35                                 ` Juri Linkov
2020-09-18 10:59                                   ` Lars Ingebrigtsen
2020-09-21 19:12                                     ` Juri Linkov
2020-09-22 14:45                                       ` Lars Ingebrigtsen
2020-09-22 18:18                                         ` Juri Linkov
2020-09-23 13:15                                           ` Lars Ingebrigtsen
2020-11-12 20:21                                             ` Juri Linkov
2020-11-12 21:16                                               ` Basil L. Contovounesios
2020-11-13  8:29                                                 ` Juri Linkov
2020-11-16 20:55                                                   ` Juri Linkov
2020-11-16 21:37                                                     ` Drew Adams [this message]
2009-08-16 10:27             ` martin rudalics
2009-08-18  3:10           ` Stefan Monnier
2009-08-19  0:47             ` Juri Linkov
2009-08-15 10:11         ` martin rudalics
2009-08-14  7:17     ` martin rudalics
2009-08-14 22:45       ` Juri Linkov
2009-08-15 10:11         ` martin rudalics
2009-08-15 23:03           ` Juri Linkov
2009-08-16 10:27             ` martin rudalics
2009-08-13 23:28 ` Juri Linkov

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