[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: An issue with XPath 2.0 sequences (Was Re: RE: Mue

Subject: Re: An issue with XPath 2.0 sequences (Was Re: RE: Muenchian method, and keys 'n stuff)
From: Joerg Pietschmann <joerg.pietschmann@xxxxxx>
Date: Thu, 31 Jan 2002 10:12:46 +0100
Re:  An issue with XPath 2.0 sequences (Was Re: RE: Mue
Dimitre Novatchev <dnovatchev@xxxxxxxxx> wrote:
> Several people already expressed their curiosity about what was the
> reason to forbid a sequence to have an element-sequence.

Well, i can see people getting uneasy about sequences containing
empty sequences. In particular there may be conflicting expectations
how to interpret a sequence containing an empty sequence in various 
boolean contexts. In my LISP days i've seen quite a few people
hunting bugs ultimately caused by the difference between NIL
and '(NIL). There may be also problems in how to handle empty
sequences in unions and other functionality: should the result
of (())|(()) be (()) or (()()) or even ()? Should sum((1 () 2))
result in 3 or NaN?

Having said that, i still think it would be much cleaner to
allow sequences containing sequences, even if it breaks some
existing style sheets.


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

Current Thread


Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
First Name
Last Name
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.