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

RE: RE: fn:contains multiple strings to compare with

Subject: RE: RE: fn:contains multiple strings to compare with
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Wed, 5 Nov 2008 08:40:53 -0000
RE:  RE: fn:contains multiple strings to compare with
> You could use a trick. Sequences returned from a sequence 
> expression are always flattened and concatenated. So:
> for $city in ('Hamburg', 'Coblenz', 'Aachen') return (if 
> (contains('Hamburger', $city)) then true() else ())
> ...returns true(), because the empty sequences are simply 
> discarded. 

Not a good idea. If the input was "von Hamburg nach Aachen" the result would
be (true(), true()), and applying boolean() to that result gives an error.

And you don't need a trick here anyway, because 

some $city in ('Hamburg', 'Coblenz', 'Aachen') satisfies (contains($input,

solves the problem perfectly well.

Or, if you prefer brevity, you can write

exists(('Hamburg', 'Coblenz', 'Aachen')[contains($input, .)])

Michael Kay

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.