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Re: How to avoid compiler warning `unused lexical variable' for `dolist'
From: |
Jean Louis |
Subject: |
Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'? |
Date: |
Thu, 7 Jan 2021 14:12:34 +0300 |
User-agent: |
Mutt/2.0 (3d08634) (2020-11-07) |
* Philipp Stephani <p.stephani2@gmail.com> [2021-01-07 13:07]:
> Am Do., 7. Jan. 2021 um 08:59 Uhr schrieb Jean Louis <bugs@gnu.support>:
> >
> > (defun db/table-id-plist (table id pg)
> > "Returns plist for table by its table_id"
> > (let* ((columns (db/table-columns table pg))
> > (sql (db/sql-by-columns table columns id))
> > (values (rcd-sql-first sql pg))
> > (values (append values nil))
> > (length (length columns))
> > (plist '()))
> > (dotimes (i length plist)
> > (setf plist (plist-put plist (intern (elt columns i)) (elt values
> > i))))))
> >
> >
> > What is proper way to avoid this warning in `dolist' or `dotimes':
> >
> > rcd-db.el:841:1: Warning: Unused lexical variable āiā
>
> 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
> ...)
> plist
Yes, thank you, that solves the problem.
But it implies that bug should be rather solved as function
description for `dotimes' allows return value as third argument.
This way is upside down, we tell programmers to not use function that
was defined as usable.
- How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Jean Louis, 2021/01/07
- Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Emanuel Berg, 2021/01/07
- Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Philipp Stephani, 2021/01/07
- Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?,
Jean Louis <=
- Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Philipp Stephani, 2021/01/07
- Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Emanuel Berg, 2021/01/07
- FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Drew Adams, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Jean Louis, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Stefan Monnier, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Jean Louis, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Emanuel Berg, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Jean Louis, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Stefan Monnier, 2021/01/07
- Re: FW: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'?, Jean Louis, 2021/01/07