From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Nicolas Petton <nicolas@petton.fr>
Cc: emacs-devel <emacs-devel@gnu.org>
Subject: Re: Using gv in map and seq?
Date: Thu, 18 Jun 2015 22:52:55 -0400 [thread overview]
Message-ID: <jwvvbek8lgg.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87egl86b40.fsf@petton.fr> (Nicolas Petton's message of "Thu, 18 Jun 2015 21:59:59 +0200")
> You lost me :-)
> Could you explain a bit more?
Quelle partie?
gv-letplace prend une "place" est la transforme en un "getter" et un
"setter". P.ex. si `map' est (nth 5 (foo)), gv-letplace va ajouter un
"(let ((x (nthcdr 5 (foo)))) ...)" et renvoyer la sexp "(car x)" comme
"getter" et la fonction (lambda (v) `(setcar x ,v)) comme "setter".
Ça doit être au tout debut du gv-expander, vu que l'évaluation de
(nthcdr 5 (foo)) doit avoir lieu une seule fois et avant l'évaluation de
`key', `default', etc...
Ensuite, on veut passer cette "place" à `alist-get' (pour éviter de
réinventer son fonctionnement), mais on peut plus utiliser `map' (qui
causerait une deuxième évaluation de (nthcdr 5 (foo)), et donc une
erreur) donc il faut synthétiser une place à partir de "mgetter" et
"msetter", et c'èst à ça que sert le `map--raw-place'.
Stefan
next prev parent reply other threads:[~2015-06-19 2:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-15 10:47 Using gv in map and seq? Nicolas Petton
2015-06-15 12:41 ` Stefan Monnier
2015-06-15 13:48 ` Nicolas Petton
2015-06-15 16:30 ` Stefan Monnier
2015-06-16 1:45 ` Stefan Monnier
2015-06-16 7:13 ` Nicolas Petton
2015-06-16 20:35 ` Nicolas Petton
2015-06-17 0:41 ` Stefan Monnier
2015-06-17 12:58 ` Stefan Monnier
2015-06-17 14:40 ` Nicolas Petton
2015-06-17 17:39 ` Stefan Monnier
2015-06-18 19:59 ` Nicolas Petton
2015-06-19 2:52 ` Stefan Monnier [this message]
2015-06-16 21:28 ` Nicolas Petton
2015-06-18 8:31 ` [OT] Working with patches inlined in emails (was: Using gv in map and seq?) Nicolas Petton
2015-06-18 8:51 ` Eli Zaretskii
2015-06-18 9:27 ` [OT] Working with patches inlined in emails João Távora
2015-06-18 9:38 ` [OT] Working with patches inlined in emails (was: Using gv in map and seq?) Nicolas Petton
2015-06-18 9:45 ` Nicolas Petton
2015-06-18 8:58 ` [OT] Working with patches inlined in emails Andreas Schwab
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=jwvvbek8lgg.fsf-monnier+emacs@gnu.org \
--to=monnier@iro.umontreal.ca \
--cc=emacs-devel@gnu.org \
--cc=nicolas@petton.fr \
/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.