Re: How to read an integer from the minibuffer

[Jean Louis]

* Emanuel Berg via Users list for the GNU Emacs text editor 
<help-gnu-emacs@gnu.org> [2021-11-13 00:16]:
> Jean Louis wrote:
> 
> > Should I say "actual number"?
> 
> It depends:
> 
>   complex    C = ... -3 + 2i, 0, 1 + 3i ...                          
>   composite      4, 6, 8, 9, 10, 12 ...
>   integers   Z = ... -3, -2, -1, 0, 1, 2, 3 ...
>   irrational F = ... \pi, \sqrt{2}, 0.121221222 ...
>   natural    N = 1, 2, 3, 4 ...
>   prime      P = 2, 3, 5, 7, 11, 13, 17 ...
>   rational   Q = -\frac{1}{2}, 0.33333 ... \frac{5}{2}, \frac{11}{10} ... 
>   real       R = ... -3, -1, 0, \frac{1}{5}, 1.1, \sqrt{2}, 2, 3, \pi ...
>   whole      W = 0, 1, 2, 3, 4 ...
> 
> https://davenport.libguides.com/math-skills-overview/basic-operations/sets

I would just check for those numbers that are accepted by Emacs Lisp.

2i does not evaluate, thus I cannot use that one.

-- 
Jean

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