[xsl] Re: XPath/XSLT 2.0: What is the most efficient way to find if a sequence is empty?

["Dimitre Novatchev" <dnovatchev@xxxxxxxxx>]

> There are two complementary functions empty($seq) and exists($seq).
>
> I would expect any decent optimizer to generate exactly the same code
> for these as for count($x)=0 - but I guess there are processors out
> there that don't have decent optimizers.

Thank you, Mike.

The name "exists" does not describe very well what the function actually
does. A far-better name is "non-empty", and it is immediately perceived as
the really complementary function to empty().


=====
Cheers,

Dimitre Novatchev.
http://fxsl.sourceforge.net/ -- the home of FXSL




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