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Re: How to read an integer from the minibuffer
From: |
tomas |
Subject: |
Re: How to read an integer from the minibuffer |
Date: |
Sat, 13 Nov 2021 08:32:09 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
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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- Re: How to read an integer from the minibuffer, (continued)
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/12
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/12
- Re: How to read an integer from the minibuffer, tomas, 2021/11/12
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/12
- Re: How to read an integer from the minibuffer, tomas, 2021/11/12
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/12
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/13
- Re: How to read an integer from the minibuffer,
tomas <=
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/16
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/13
- Re: How to read an integer from the minibuffer, tomas, 2021/11/13
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/13
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/16
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/16
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/11
- Re: How to read an integer from the minibuffer, Gregory Heytings, 2021/11/11
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/11
Re: How to read an integer from the minibuffer, Marcin Borkowski, 2021/11/12