From: <tomas@tuxteam.de>
To: help-gnu-emacs@gnu.org
Subject: Re: How to read an integer from the minibuffer
Date: Sat, 13 Nov 2021 08:32:09 +0100 [thread overview]
Message-ID: <20211113073209.GA15896@tuxteam.de> (raw)
In-Reply-To: <YY9fMiYuC1FHQGJV@protected.localdomain>
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On Sat, Nov 13, 2021 at 09:46:10AM +0300, Jean Louis wrote:
> * Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2021-11-13 00:21]:
> > tomas wrote:
> >
> > > Why not simply numberp?
> > >
> > > (and (numberp s) (string-to-number s))
> >
> > King :)
>
> (let ((s " 123"))
> (and (numberp s) (string-to-number s))) ⇒ nil
So leading spaces are to be ignored, OK. What about trailing
spaces? Exponential notation? Bases other than 10?
I think it's time you specify what a number is /for you/. Then
compare that with what a number is /for numberp/. Then rewrite
your program :)
> Example is here:
>
> (let ((s " 123n"))
> (string-to-number "123n")) ⇒ 123
Ah, but (numberp "123n") -> nil, so the and above would work.
Or, perhaps, "123n" should be a number? This is unclear from
what you say. At least to me.
Cheers
- t
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next prev parent reply other threads:[~2021-11-13 7:32 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-11 4:53 How to read an integer from the minibuffer Marcin Borkowski
2021-11-11 5:11 ` Po Lu
2021-11-11 7:18 ` Marcin Borkowski
2021-11-12 7:21 ` Yuri Khan
2021-11-13 6:59 ` Marcin Borkowski
2021-11-13 8:43 ` tomas
2021-11-13 7:33 ` Jean Louis
2021-11-16 6:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 7:37 ` Yuri Khan
2021-11-16 8:00 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 6:27 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 10:25 ` Gregory Heytings
2021-11-11 10:28 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 11:00 ` Gregory Heytings
2021-11-11 13:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 11:17 ` Gregory Heytings
2021-11-11 13:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 14:30 ` Gregory Heytings
2021-11-12 0:28 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 0:37 ` Gregory Heytings
2021-11-12 0:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 0:52 ` Gregory Heytings
2021-11-12 0:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 19:05 ` Jean Louis
2021-11-12 19:25 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 19:55 ` Jean Louis
2021-11-12 21:14 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-13 6:37 ` Jean Louis
2021-11-16 6:21 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 19:56 ` Jean Louis
2021-11-12 20:02 ` Jean Louis
2021-11-12 20:24 ` tomas
2021-11-12 21:15 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 21:30 ` tomas
2021-11-12 21:34 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-13 6:46 ` Jean Louis
2021-11-13 7:32 ` tomas [this message]
2021-11-16 6:24 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-13 6:36 ` Jean Louis
2021-11-13 8:17 ` tomas
2021-11-13 8:44 ` Jean Louis
2021-11-16 6:15 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 6:03 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 1:09 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 1:12 ` Gregory Heytings
2021-11-12 3:07 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 6:21 ` Marcin Borkowski
2021-11-16 7:52 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 8:05 ` Yuri Khan
2021-11-16 9:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 11:18 ` Yuri Khan
2021-11-16 11:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 11:52 ` Yuri Khan
2021-11-16 12:00 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 13:10 ` Emanuel Berg via Users list for the GNU Emacs text editor
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