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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: managing my keybindings
Date: Mon, 10 May 2010 10:10:10 -0400	[thread overview]
Message-ID: <jwvhbmfetnt.fsf-monnier+gnu.emacs.help@gnu.org> (raw)
In-Reply-To: 9129c243-472e-4cd4-9c89-f017db8ea5b2@o14g2000yqb.googlegroups.com

>   (let (my-func)
>     (setq my-func (intern (concat "my-" (symbol-name func))))

This is kind of like:

   int my-func = 0;
   my-func = <somethingelse>;

except that Elisp's semantics make it harder for the (byte-)compiler to
eliminate the redundant initialization.

A generally good rule of thumb is "setq (aka assignment) is bad for your
karma".  So just write:

   (let ((my-func (intern (concat "my-" (symbol-name func)))))


-- Stefan


  reply	other threads:[~2010-05-10 14:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-08  0:38 managing my keybindings LanX
2010-05-08  2:09 ` Lennart Borgman
2010-05-08 12:22   ` LanX
     [not found] ` <mailman.0.1273284589.603.help-gnu-emacs@gnu.org>
2010-05-09 11:29   ` Andreas Politz
2010-05-09 11:55     ` Lennart Borgman
2010-05-09 18:21 ` LanX
2010-05-09 19:12   ` LanX
2010-05-10 14:10     ` Stefan Monnier [this message]
2010-05-10 14:25       ` LanX

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