From: Thien-Thi Nguyen <ttn@gnuvola.org>
To: emacs-devel@gnu.org
Subject: Re: emacs lisp syntax rfc: (cond (EXPR => (lambda (X) ...)))
Date: Tue, 04 Jan 2011 18:00:57 +0100 [thread overview]
Message-ID: <8739p8bo3a.fsf@ambire.localdomain> (raw)
In-Reply-To: <jwvfwtahh9i.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Sun, 02 Jan 2011 21:19:44 -0500")
() Stefan Monnier <monnier@iro.umontreal.ca>
() Sun, 02 Jan 2011 21:19:44 -0500
The only problem I can see with it is that it relies on a
function call, which is a slow operation in the current Elisp
implementation.
Perhaps the compiler can optimize
(EXPR => (lambda (VAR) BODY))
to be
(let ((VAR EXPR))
(when VAR
;; book-keeping to mark ‘cond’ success,
;; to preclude next clause, here.
BODY))
?
next prev parent reply other threads:[~2011-01-04 17:00 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-02 21:45 emacs lisp syntax rfc: (cond (EXPR => (lambda (X) ...))) Thien-Thi Nguyen
2011-01-02 21:57 ` Fren Zeee
2011-01-02 22:52 ` Harald Hanche-Olsen
2011-01-04 16:41 ` Thien-Thi Nguyen
2011-01-04 17:56 ` Harald Hanche-Olsen
2011-01-04 18:39 ` Thien-Thi Nguyen
2011-01-03 2:19 ` Stefan Monnier
2011-01-04 17:00 ` Thien-Thi Nguyen [this message]
2011-01-03 16:15 ` Richard Stallman
2011-01-04 18:12 ` Thien-Thi Nguyen
2011-01-05 1:55 ` Stephen J. Turnbull
2011-01-05 3:21 ` Thien-Thi Nguyen
2011-01-05 4:16 ` Stephen J. Turnbull
2011-01-05 5:15 ` Miles Bader
2011-01-05 21:29 ` Stefan Monnier
2011-01-05 22:40 ` Harald Hanche-Olsen
2011-01-06 0:10 ` Stefan Monnier
2011-01-06 8:24 ` Helmut Eller
2011-01-07 3:49 ` Stefan Monnier
2011-01-06 18:43 ` Richard Stallman
2011-01-05 23:36 ` Richard Stallman
2011-01-11 17:20 ` Andy Wingo
2011-01-05 5:17 ` Miles Bader
-- strict thread matches above, loose matches on Subject: below --
2011-01-03 5:37 MON KEY
2011-01-04 17:20 ` Thien-Thi Nguyen
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