From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Cc: Artur Malabarba <bruce.connor.am@gmail.com>
Subject: Re: [Emacs-diffs] master 1758951: lisp/let-alist.el (let-alist): Evaluate `alist' only once.
Date: Thu, 18 Dec 2014 23:33:35 -0500 [thread overview]
Message-ID: <jwv7fxoi7iz.fsf-monnier+emacsdiffs@gnu.org> (raw)
In-Reply-To: <E1Y1hlx-0001Pn-JK@vcs.savannah.gnu.org> (Artur Malabarba's message of "Thu, 18 Dec 2014 20:34:09 +0000")
> + (let ((var (gensym "let-alist")))
> + `(let ((,var ,alist)
You can use `macroexp-let2' for that (with the extra benefit that it
will skip the `let' if `alist' is already a trivial expression such as
a simple variable).
Stefan
next parent reply other threads:[~2014-12-19 4:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20141218203409.5403.91769@vcs.savannah.gnu.org>
[not found] ` <E1Y1hlx-0001Pn-JK@vcs.savannah.gnu.org>
2014-12-19 4:33 ` Stefan Monnier [this message]
2014-12-19 12:59 ` [Emacs-diffs] master 1758951: lisp/let-alist.el (let-alist): Evaluate `alist' only once Artur Malabarba
2014-12-19 12:59 ` Artur Malabarba
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