W3C home > Mailing lists > Public > www-tag@w3.org > December 2002

Re: Posted draft of URI comparison finding

From: Tim Bray <tbray@textuality.com>
Date: Wed, 11 Dec 2002 08:21:46 -0800
Message-ID: <3DF7661A.5020502@textuality.com>
To: Dan Connolly <connolly@w3.org>
Cc: WWW-Tag <www-tag@w3.org>

Dan Connolly wrote:

> 
> |Software is commonly required to compare two URIs to determine
> | whether they identify the same resource.
> 
> Really? What software has to do that?
> I find that software almost *never* needs to determine
> whether two URIs determine the same resource.
> 
> In my suggested rewrite of 2.2.1, I wrote:
> 
> [[
> The problem of
> determining whether two different absolute URI references refer to the
> same resource or not is, in the general case, arbitrarily hard.

I've rewritten the first section of the draft in light of Dan's and 
Martin's commentes pointing out the fuzziness.  Software has to work 
with the strings to determine whether it thinks they're effectively 
equal.  There is probably some notion of resource equivalence lurking 
behind this, but the strings and therules from the RFCs are all we have 
to work with, so let's make that more clear. -Tim
Received on Wednesday, 11 December 2002 15:10:33 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Thursday, 26 April 2012 12:47:14 GMT