From: Jon Harrop <jon@ffconsultancy.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Hash clash in polymorphic variants
Date: Thu, 10 Jan 2008 21:24:26 +0000 [thread overview]
Message-ID: <200801102124.26245.jon@ffconsultancy.com> (raw)
In-Reply-To: <20080110203534.GB12491@stratocaster.home>
On Thursday 10 January 2008 20:35:34 Eric Cooper wrote:
> On Thu, Jan 10, 2008 at 05:09:13PM +0000, Jon Harrop wrote:
> > ISTR advice that constructors sharing the first few characters should be
> > avoided in order to reduce the likelihood of clashing hash values for
> > polymorphic variants. Is that right?
>
> I don't think it's worth worrying about.
>
> I wrote a program a while ago to look into this. I never saw any
> "human-sensible" collisions (between two identifiers that a person
> might have chosen). And if you're producing gensyms in a program, you
> can just check ahead of time.
I'm interested in automatically translating the GL_* enum from OpenGL into
polymorphic variants. So although it is generated code I have little control
over it, e.g. I cannot change the translation as OpenGL gets extended because
code will already be using the existing names.
Still, maybe I'm over-reacting. ;-)
--
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com/products/?e
next prev parent reply other threads:[~2008-01-10 21:32 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-10 17:09 Jon Harrop
2008-01-10 20:35 ` [Caml-list] " Eric Cooper
2008-01-10 21:24 ` Jon Harrop [this message]
2008-01-10 21:40 ` David Allsopp
2008-01-11 13:30 ` Kuba Ober
2008-01-11 13:48 ` Jon Harrop
2008-01-11 16:14 ` Kuba Ober
2008-01-11 18:40 ` David Allsopp
2008-01-14 12:20 ` Kuba Ober
2008-01-14 14:44 ` Stefan Monnier
2008-01-14 14:56 ` [Caml-list] " Kuba Ober
2008-01-14 15:37 ` David Allsopp
2008-01-14 15:44 ` Kuba Ober
2008-01-14 16:03 ` David Allsopp
2008-01-14 15:45 ` Stefan Monnier
2008-01-15 3:36 ` [Caml-list] " Jacques Garrigue
2008-01-15 4:59 ` Jon Harrop
2008-01-15 9:01 ` Jacques Garrigue
2008-01-15 18:17 ` Jon Harrop
2008-01-15 19:20 ` Gerd Stolpmann
2008-01-15 22:04 ` Jon Harrop
2008-01-16 13:48 ` Kuba Ober
2008-01-16 15:02 ` Dario Teixeira
2008-01-16 19:00 ` Jon Harrop
2008-01-17 13:09 ` Kuba Ober
2008-01-18 5:33 ` Kuba Ober
2008-01-18 5:19 ` Kuba Ober
2008-01-18 5:39 ` Kuba Ober
2008-01-16 3:26 ` Jacques GARRIGUE
2008-01-16 3:34 ` Yaron Minsky
2008-01-16 3:42 ` Jon Harrop
2008-01-16 4:40 ` Jon Harrop
2008-01-16 16:03 ` Eric Cooper
2008-01-16 10:50 ` Richard Jones
2008-01-14 17:14 ` Jon Harrop
2008-01-14 17:36 ` Alain Frisch
2008-01-11 0:15 ` [Caml-list] " Jacques Garrigue
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