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Re: (interactive) and &optional
From: |
Jean Louis |
Subject: |
Re: (interactive) and &optional |
Date: |
Sat, 25 Mar 2023 17:32:06 +0300 |
User-agent: |
Mutt/2.2.9+54 (af2080d) (2022-11-21) |
* Dr Rainer Woitok <rainer.woitok@gmail.com> [2023-03-25 15:05]:
> > I do not like involving `interactive' at all, so I do the handling by
> > providing optional argument and telling function to check for it, or
> > ask for it.
> >
> > (defun search-something (&optional query)
> > "Search something by using QUERY."
> > (interactive)
> > (let* ((query (or query (read-from-minibuffer "Query: "))))
> > (do-the-search query)))
>
> Correct me if I'm wrong, but doesn't this unconditionally call "read-
> from-minibuffer" when non-interactively called without argument? Non-
> interactively I would like the function to simply use my default value.
Yet, it calls unconditionally if that is the choice of programmer.
If you want default value, then you can do so:
(let* ((query (or query my-default-value (read-from-minibuffer "Query: "))))
(do-the-search query)))
or like this:
(let* ((query (or query my-default-value)))
(do-the-search query))
--
Jean
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- Re: (interactive) and &optional, (continued)
- Re: (interactive) and &optional, Emanuel Berg, 2023/03/23
- Re: (interactive) and &optional, Jean Louis, 2023/03/24
- Re: (interactive) and &optional, Emanuel Berg, 2023/03/26
- RE: [External] : Re: (interactive) and &optional, Drew Adams, 2023/03/26
- Re: [External] : Re: (interactive) and &optional, John Yates, 2023/03/26
Re: (interactive) and &optional, Dr Rainer Woitok, 2023/03/25