GNU bug report logs - #8415
23.3.50; Extensible Emacs Registers

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Message #37 received at 8415 <at> debbugs.gnu.org (full text, mbox):

From: Leo <sdl.web <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Davis Herring <herring <at> lanl.gov>, 8415 <at> debbugs.gnu.org,
	Daniel Colascione <dan.colascione <at> gmail.com>
Subject: Re: bug#8415: 23.3.50; Extensible Emacs Registers
Date: Tue, 05 Apr 2011 13:42:20 +0800

On 2011-04-05 11:07 +0800, Stefan Monnier wrote:
> The end point is pretty much the same, but all the intermediate steps
> are safe and easy to check.

I think a structure still is a better approach. It offers uniformity and
allows access to the value stored in each slot so one can easily build a
new register reusing values from an old one which, in some use cases
(defadvice), can be convenient.

>> Well, there's EIEIO.  It gives you the ability to easily add methods
>> while not baking the dispatch into each one.  On the other hand, it's a
>> quite a bit of code to pull into the core at runtime.
>
> Indeed.

I have thought about using EIEIO in the beginning and ruled it out since
it is required at run time.

Leo

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