Re: Passing a list to an interactive function

[pietru]

Am trying to fill variables "ta tb tc" with the numbers from "tlist"

(defun thermoluminesce (tseq)
  "Sets thermoluminesce."
  (interactive "stseq: ")
  (message "stseq: %s " tseq)
  (let  ((slist (split-string tseq))
         tlist ta tb tpab)
    (message "slist: %s" slist)
    (message "tlist: %s" tlist)
    (message "tlen: %d" (length tlist))
    (setq tlist (mapcar #'string-to-number slist))
    ;;(setq ta (nth 1 tlist))
    ;;(setq tb (nth 2 tlist))
    ;;(setq tc (nth 3 tlist))
    (message "ta tb tc: %d %d %d" ta tb tc) ))



> Sent: Saturday, December 19, 2020 at 4:49 AM
> From: "Jean Louis" <bugs@gnu.support>
> To: pietru@caramail.com
> Cc: "Help Gnu Emacs" <help-gnu-emacs@gnu.org>
> Subject: Re: Passing a list to an interactive function
>
> * pietru@caramail.com <pietru@caramail.com> [2020-12-19 06:34]:
> > I decided towards a simpler strategy by passing a string with numbers
> > separated by spaces.  But inside the function, I got to convert from
> > string to a list containing numbers.
> >
> > How  could I convert to a list containing numbers.
> >
> > Example of string: "3 5 13"
>
> Function `read-number' ensured you get the number. If function is for
> you it is fine, if it is for others you risk not getting a number. If
> data goes to database which also accepts string you risk losing
> data as you maybe did not get a number.
>
> If user writes spaces before numbers or after numbers or multiple
> spaces between you need to remove such.
>
> (setq my-worse-string "  1 2  3 4  5 6    ")
>
> (setq my-string (split-string my-worse-string) ;; it will convert to numbers
>
> my-string becomes => ("1" "2" "3" "4" "5" "6")
>
>       Inspect `split-string' as it can omit nulls and trim
>       strings automatically. But I did not here include those
>       switches, as it does so by default.
>
> Then you need to convert list of strings to list of numbers:
>
> (mapcar #'string-to-number my-string)
>
>
>