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From: Ivan Andrus <darthandrus@gmail.com>
To: Oleh <ohwoeowho@gmail.com>
Cc: "Daniel Colascione" <dancol@dancol.org>,
	"René Kyllingstad" <listmailemacs@kyllingstad.com>,
	"David Kastrup" <dak@gnu.org>,
	"emacs-devel@gnu.org" <emacs-devel@gnu.org>
Subject: Re: [PATCH] Clojure-like syntactic sugar for an anonymous function literal
Date: Thu, 22 Jan 2015 09:57:09 -0700	[thread overview]
Message-ID: <CA+R1Coyy8eJSHUo=Ui_P+TcXYqhgxaZi5YqLXqu+HOdLSZSLEw@mail.gmail.com> (raw)
In-Reply-To: <CAA01p3pxVtx0vgPqpGPNcriG5Gwj2NEFmNwcmwvy0G80-un+JA@mail.gmail.com>

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On Jan 22, 2015, at 3:05 AM, Oleh <ohwoeowho@gmail.com> wrote:

Sure. My point is that existence of prettify-symbols-mode and equivalent
is another argument against the creation of a shorter-than-lambda
function literal syntax.


Note that this isn't just a lame

  (defalias 'λ 'lambda)

we're talking about here. `short-lambda' takes away a *whole* paren
nesting level, which can be a lot, when there's only two (and there
usually is).


FWIW, if you change short-lambda to be

(defmacro short-lambda (&rest structure)
 ...)

then short-lambda can get rid of the extra level of parens.  Though I have
to admit that

#(+ % %)

is probably easier to read than

(λ + % %)

I’m personally slightly in favor of this feature (and more in favor of
reader macros).  But everything we add to Emacs lisp is something must also
be added to Guile before we can get EmacsGuile which I would also like. :)

I have my own interactive-lambda macro that creates interactive lambdas for
use in keybindings and such.  It seems that making the lambdas interactive
is a very important feature for the use cases I have for lambdas in Emacs.
I also have an (inaccurately named) add-lambda-to-hook macro that creates a
_named_ function and adds it to a hook.  This prevents it from being double
added and allows updating the "lambda".  IOW I'm not sure a single
mechanism can handle all use cases satisfactorily.

-Ivan

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  reply	other threads:[~2015-01-22 16:57 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-21 21:38 [PATCH] Clojure-like syntactic sugar for an anonymous function literal Oleh
2015-01-21 22:28 ` samer
2015-01-21 22:37   ` Oleh
2015-01-21 23:36     ` Artur Malabarba
2015-01-21 23:46       ` Oleh
2015-01-22  0:54         ` Artur Malabarba
2015-01-22  0:57           ` Artur Malabarba
2015-01-22  1:29 ` Daniel Colascione
2015-01-22  2:21   ` Drew Adams
2015-01-22 13:35     ` Lars Brinkhoff
2015-01-22  7:20   ` Stephen J. Turnbull
2015-01-22  8:04     ` Oleh
2015-01-22  8:16       ` David Kastrup
2015-01-22  9:07       ` Andreas Schwab
2015-01-22  9:19         ` Oleh
2015-01-22  8:52   ` René Kyllingstad
2015-01-22  9:17     ` David Kastrup
2015-01-22  9:27       ` Oleh
2015-01-22  9:38         ` Daniel Colascione
2015-01-22  9:45           ` Oleh
2015-01-22  9:50             ` Daniel Colascione
2015-01-22  9:52               ` Oleh
2015-01-22  9:57                 ` Daniel Colascione
2015-01-22 10:05                   ` Oleh
2015-01-22 16:57                     ` Ivan Andrus [this message]
2015-01-23  0:54           ` Leo Liu
2015-01-24 23:33           ` Lars Ingebrigtsen
2015-01-22 10:15         ` Stephen J. Turnbull
2015-01-22 10:20           ` David Kastrup
2015-01-22 14:21             ` Stephen J. Turnbull
2015-01-22 14:31               ` Oleh
2015-01-23  1:03                 ` Stephen J. Turnbull
2015-01-22 10:22           ` Oleh
2015-01-22 10:32             ` David Kastrup
2015-01-22 10:40               ` Oleh
2015-01-22 10:56             ` Tassilo Horn
2015-01-22 11:03               ` Oleh
2015-01-22 14:35             ` Stephen J. Turnbull
2015-01-22 14:44               ` Oleh
2015-01-23  1:11                 ` Stephen J. Turnbull
2015-01-22 14:48               ` Artur Malabarba
2015-01-23  1:17                 ` Stephen J. Turnbull
2015-01-22 11:03           ` Phillip Lord
2015-01-22  9:35       ` René Kyllingstad
2015-01-22  9:45         ` Daniel Colascione
2015-01-22  9:49         ` David Kastrup
2015-01-22  9:53           ` Daniel Colascione
2015-01-22 10:22         ` David Kastrup
2015-01-22 12:37   ` Artur Malabarba
2015-01-22 12:46     ` Phillip Lord
2015-01-22 12:49       ` Daniel Colascione
2015-01-22 13:07         ` Oleh
2015-01-22 22:10           ` Richard Stallman
2015-01-23  9:28             ` David Kastrup
2015-01-24  1:09               ` Richard Stallman
2015-01-24  8:29                 ` Thien-Thi Nguyen
2015-01-23 10:33             ` Eli Zaretskii
2015-01-22 16:44 ` Stefan Monnier
2015-01-22 17:22   ` Oleh
2015-01-22 20:34     ` Daniel Colascione
2015-01-22 23:36       ` Stefan Monnier
2015-01-22 23:38         ` Reader macros (Was: Re: [PATCH] Clojure-like syntactic sugar for an anonymous function literal) Daniel Colascione
2015-01-23  9:33           ` Reader macros David Kastrup
2015-01-23 11:45             ` Daniel Colascione
2015-01-23 12:27               ` David Kastrup
2015-01-23 10:34         ` [PATCH] Clojure-like syntactic sugar for an anonymous function literal Phillip Lord
2015-01-23 10:47           ` Oleh
2015-01-23 11:53             ` Phillip Lord
2015-01-23 12:02               ` Daniel Colascione
2015-01-23 11:50           ` Daniel Colascione
2015-01-23 13:18             ` Phillip Lord
2015-01-23 20:24           ` Stefan Monnier
2015-01-23 20:52             ` Stefan Monnier
2015-01-23 22:25               ` Phillip Lord
2015-01-23  7:44       ` Oleh
2015-01-22 23:28     ` Stefan Monnier
2015-01-22 18:30   ` Artur Malabarba
  -- strict thread matches above, loose matches on Subject: below --
2015-01-26 22:22 Barry OReilly

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