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Re: Emacs Lisp coding style question
From: |
Barry Margolin |
Subject: |
Re: Emacs Lisp coding style question |
Date: |
Wed, 02 Jul 2014 11:20:37 -0400 |
User-agent: |
MT-NewsWatcher/3.5.3b3 (Intel Mac OS X) |
In article <mailman.4715.1404309100.1147.help-gnu-emacs@gnu.org>,
Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> >>> 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))
> ...)
>
> >>> 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.
>
> >> 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.
Root of all evil. Unless this code is in a heavily used inner loop, it
probably won't make any significant difference.
--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***