RE: xxRe: efficient use of key element and function

It's been added to the spec since the book was published.

Generally the book still represents a pretty accurate guide to the language,
but there are one or two late changes that didn't make it in.

Michael Kay
http://www.saxonica.com/ 

> -----Original Message-----
> From: Manfred Staudinger [mailto:manfred.staudinger@xxxxxxxxx] 
> Sent: 07 September 2005 18:01
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: xxRe:  efficient use of key element and function
> 
> > You can use
> > if (doc-available($foo)) then doc($foo) else do-something-else
> > as an alternative to maintaining a list of documents.
> I didn't know about, but yes, thats interresting.
> Is it something special as I found it mentioned in a reference of
> w3schools, but not in Michael's book
> (neither in XSLT 2.0, 3rd ed., nor in XPath 2.0)??
> 
> Manfred