From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Daniel Colascione <dan.colascione@gmail.com>
Cc: Davis Herring <herring@lanl.gov>,
8415@debbugs.gnu.org, Leo <sdl.web@gmail.com>
Subject: bug#8415: 23.3.50; Extensible Emacs Registers
Date: Mon, 04 Apr 2011 21:41:30 -0400 [thread overview]
Message-ID: <jwv1v1hcwja.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <4D9A45CD.4030808@gmail.com> (Daniel Colascione's message of "Mon, 04 Apr 2011 15:27:25 -0700")
>> AFAICT, the code currently doesn't guess: the different kinds of values
>> are mutually exclusive. So the moment at which they decide which
>> code to use doesn't matter because it'll give the same answer (tho
>> as you point out there are errors in this code currently because it's
>> dispersed).
> Polymorphism-via-typecase is delicate at best no matter what language we're
> working in.
[ Irrelevant side-comment: Completely depends on the problem at hand: it
makes adding "methods" much easier. ]
>>> So we will have to make almost all values a struct anyway to fix bugs
>>> like this.
>> Yes, all new types will use register structs. That's not a problem.
>> And you can even later-on de-support old types and have them go through
>> register structs as well.
> What's wrong with getting it over with now?
It's the difference between "one simple obviously correct change" and
"one big change that might be correct".
> I'd also slightly prefer Leo's structure approach to the
> dispatcher-function one below.
I tend to agree, tho both kind of suck: we'd want real objects with
dynamic dispatch instead.
Stefan
next prev parent reply other threads:[~2011-04-05 1:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-03 12:29 bug#8415: 23.3.50; Extensible Emacs Registers Leo
2011-04-03 17:21 ` Daniel Colascione
2011-04-04 1:29 ` Leo
2011-04-04 14:29 ` Stefan Monnier
2011-04-04 17:37 ` Leo
2011-04-04 22:19 ` Stefan Monnier
2011-04-04 22:27 ` Daniel Colascione
2011-04-05 1:41 ` Stefan Monnier [this message]
2011-04-05 1:49 ` Daniel Colascione
2011-04-05 3:07 ` Stefan Monnier
2011-04-05 5:42 ` Leo
2011-04-05 13:50 ` Stefan Monnier
2011-04-06 5:00 ` Leo
2011-04-06 15:38 ` Stefan Monnier
2011-04-07 3:13 ` Leo
2011-04-09 1:25 ` Stefan Monnier
2011-06-23 8:11 ` Leo
2011-06-25 13:19 ` Stefan Monnier
2011-06-26 6:42 ` Leo
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