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From: Thien-Thi Nguyen <ttn@gnu.org>
To: emacs-devel <emacs-devel@gnu.org>
Subject: Re: Sweeter Emacs Lisp
Date: Mon, 22 Jul 2013 18:33:15 +0200	[thread overview]
Message-ID: <87a9lezh9w.fsf@zigzag.favinet> (raw)
In-Reply-To: <jwvli4yy6rv.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Mon, 22 Jul 2013 11:24:13 -0400")

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() Stefan Monnier <monnier@iro.umontreal.ca>
() Mon, 22 Jul 2013 11:24:13 -0400

   So maybe a when-let makes sense, tho I'd prefer a when-let*
   (which has also been seen under the name let-and, IIRC).

Are you willing to consider Scheme's ‘and-let*’ (SRFI 2).

IIRC i also proposed, maybe a year back, a Schemish ‘cond’
(with ‘=>’) but it was rejected.  RMS suggested instead:

 (cond VAR (CONDITION [BODY...])
           ...)

which would bind VAR to the (non-nil) value of CONDITION
such that BODY can refer to it, equivalent to:

 (let (VAR)
   (cond ((setq VAR CONDITION) [BODY...])
         ...))

I like this; it strikes me as more Lispy.  Unfortunately, i don't
remember if this "cond w/ VAR" went anywhere (so probably it didn't).

-- 
Thien-Thi Nguyen
   GPG key: 4C807502
   (if you're human and you know it)
      read my lisp: (responsep (questions 'technical)
                               (not (via 'mailing-list)))
                     => nil

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  reply	other threads:[~2013-07-22 16:33 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-14  2:22 Sweeter Emacs Lisp fgallina
2013-07-14 11:36 ` Dmitry Gutov
2013-07-14 11:53   ` Vitalie Spinu
2013-07-14 12:38     ` Aurélien Aptel
2013-07-14 13:25     ` Xue Fuqiao
2013-07-14 14:16     ` Pascal J. Bourguignon
2013-07-14 14:22 ` Lars Magne Ingebrigtsen
2013-07-14 16:27   ` Juanma Barranquero
2013-07-14 19:43     ` Lars Magne Ingebrigtsen
2013-07-15  3:20   ` Dmitry Gutov
2013-07-15  5:03     ` Stephen J. Turnbull
2013-07-16 20:23       ` Dmitry Gutov
2013-07-17 14:04         ` Lars Magne Ingebrigtsen
2013-07-17 15:07           ` Dmitry Gutov
2013-07-16  2:15   ` Miles Bader
2013-07-16  9:12     ` Stefan Monnier
2013-07-14 16:18 ` Josh
2013-07-14 16:30   ` Juanma Barranquero
2013-07-14 17:14     ` Josh
2013-07-14 17:18       ` Juanma Barranquero
2013-07-15  6:05         ` Lars Brinkhoff
2013-07-15  7:04   ` Stefan Monnier
2013-07-15 13:30     ` Bozhidar Batsov
2013-07-16  2:26       ` Miles Bader
2013-07-16  6:08         ` Thien-Thi Nguyen
2013-07-16 14:07           ` Drew Adams
2013-07-16  9:11       ` Stefan Monnier
2013-07-14 17:24 ` Andreas Schwab
2013-07-16  2:13 ` Miles Bader
2013-07-16  6:14   ` Stephen J. Turnbull
2013-07-16  9:07   ` Stefan Monnier
2013-07-16 11:09     ` Juanma Barranquero
2013-07-16 12:25       ` Andreas Schwab
2013-07-16 13:04         ` Thierry Volpiatto
2013-07-16 13:42         ` Juanma Barranquero
2013-07-16 14:38           ` Andreas Schwab
2013-07-16 14:42             ` Juanma Barranquero
2013-07-16 20:57       ` Stefan Monnier
2013-07-22 15:24 ` Stefan Monnier
2013-07-22 16:33   ` Thien-Thi Nguyen [this message]
2013-07-22 21:04     ` Stefan Monnier
2013-07-23  4:37       ` Thien-Thi Nguyen
2013-08-10  2:52         ` Stefan Monnier
2013-08-10 10:08         ` Pascal J. Bourguignon
2013-08-10 16:27           ` Drew Adams

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