From: Thorsten Jolitz <tjolitz@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Emacs Lisp coding style question
Date: Wed, 02 Jul 2014 16:04:25 +0200 [thread overview]
Message-ID: <87fvijyhzq.fsf@gmail.com> (raw)
In-Reply-To: jwvd2dn6fgk.fsf-monnier+gmane.emacs.help@gnu.org
Stefan Monnier <monnier@iro.umontreal.ca> writes:
>>>> But (without being able to give concrete examples right now) I noticed
>>>> that advanced Lispers tend to call this 'C-style', consider the let
>
> I've never seen it referred to as "C-style". To me "C-style" would be
>
> (let (a b c d e)
> (setq a (foo-a))
> (setq b (foo-b))
> ...)
I cannot give a concrete url but I vaguely remember having seen such a
reference.
>>>> What would be the recommended style for Emacs Lisp, or is this just a
>>>> matter of taste?
>
> Mostly taste, and it depends on the specifics. I.e. it depends on
> whether the intermediate names can be useful as code documentation, and
> indentation issues may also tip the balance between the two.
Better indentation is probably one of the main reasons I find the (let
...) style easier to read in many cases.
>>> Notice that both code might compile to the exact same binary, so there's
>>> no efficiency advantage in either.
>
> The Emacs Lisp implementation (both interpreted and compiled) is not
> sophisticated enough to get the same efficiency out of the let-binding
> version, actually.
>
>> But in terms of uncompiled user-code - would the impact of the let
>> bindings here be worth thinking about performance?
>
> No the difference should not be noticeable anyway.
Ok, thanks, so there is no need to worry about this style-question, just
use what seems to be the better option for the problem at hand.
--
cheers,
Thorsten
next prev parent reply other threads:[~2014-07-02 14:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.4706.1404305298.1147.help-gnu-emacs@gnu.org>
2014-07-02 12:56 ` Emacs Lisp coding style question Pascal J. Bourguignon
2014-07-02 13:14 ` Thorsten Jolitz
2014-07-02 13:50 ` Stefan Monnier
2014-07-02 14:04 ` Thorsten Jolitz [this message]
[not found] ` <mailman.4715.1404309100.1147.help-gnu-emacs@gnu.org>
2014-07-02 15:20 ` Barry Margolin
2014-07-02 12:47 Thorsten Jolitz
2014-07-02 14:19 ` Grant Rettke
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