Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?

[Jean Louis]

* Emanuel Berg via Users list for the GNU Emacs text editor 
<help-gnu-emacs@gnu.org> [2021-01-07 13:11]:
> Philipp Stephani wrote:
> 
> > This is https://debbugs.gnu.org/cgi/bugreport.cgi?bug=16206. tl;dr:
> > don't use the three-argument form of `dotimes':
> >
> > (dotimes (i length)  ; no `plist' here
> 
> No length there - there are loops to iterate data structures,
> so no need to measure them first :)

I am sure it can be replaced with better functions. I use `dotimes'
sometimes when I do not know the length of the list to work on. It may
be replaced by other functions or nicer ones.

In regards to third argument, to tell not to use it is not logical as:

dotimes is a Lisp macro in ‘subr.el’.

(dotimes (VAR COUNT [RESULT]) BODY...)

(dotimes (n 10) (setq a n)) => returns nil

(dotimes (n 10 a) (setq a n)) => returns a as 9

So when I need the return value from dotimes, I need it.