From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: Two questions about generalized variables
Date: Tue, 23 Feb 2016 14:28:31 +0100 [thread overview]
Message-ID: <87egc37dz4.fsf@web.de> (raw)
In-Reply-To: 87si0kktax.fsf@ericabrahamsen.net
Eric Abrahamsen <eric@ericabrahamsen.net> writes:
> > Oh, I see. Hmm, one could define a place expander quite similarly to
> > the one of `alist-get', I think, but it doesn't seem one to be
> > predefined, indeed.
>
> Right, that was my question, I guess -- I would do this with
> `gv-define-setter', right? Its docstring is a bit impenetrable, but if
> that's the right place to start I can figure it out.
I think even `gv-define-simple-setter' should be sufficient.
> Last question: How do I actually see the gv-expander of `alist-get'?
> Where is that?
Look into gv.el and search for `alist-get'.
That expander definition produces more efficient code than a separate
setter definition would - but one has to learn a bit about the concept
behind the library to understand how that works.
Regards,
Michael.
next prev parent reply other threads:[~2016-02-23 13:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-21 5:16 Two questions about generalized variables Eric Abrahamsen
2016-02-21 8:08 ` Eric Abrahamsen
2016-02-21 13:34 ` Michael Heerdegen
2016-02-21 15:01 ` Eric Abrahamsen
2016-02-21 18:08 ` Michael Heerdegen
2016-02-23 3:19 ` Eric Abrahamsen
2016-02-23 13:28 ` Michael Heerdegen [this message]
2016-02-24 2:03 ` Eric Abrahamsen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87egc37dz4.fsf@web.de \
--to=michael_heerdegen@web.de \
--cc=help-gnu-emacs@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.