Re: count char in string [The Emacs Challenge Competition - round 2, with fallout]

[Corwin Brust]

We who are about to be educated salute you ;)

On Tue, Oct 27, 2020 at 7:42 PM Emanuel Berg via Users list for the
GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:
>
> round 2:
>
> Very simple: we are looking for a function that returns the number of
> occurrences of a char in a string.

(defun count-char-in-string (string char)
     "Return the number of occurances of CHAR in STRING."
     (seq-count (apply-partially 'eq char)
            (seq-into string 'list)))

(count-char-in-string "hii" ?I) ;; ⇒ 2

Cheers!
Corwin