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

["Dimitre Novatchev" <dnovatchev@xxxxxxxxx>]

In XSLT/XPath 1.0 one would use:

  not($node-set)

to find if $node-set is the empty node-set.

However, the same test on a sequence in XPath 2.0:

  not($seq)

may return 'true' for a non-empty sequence -- e.g. for:
   ( false() )

or for

       (0)

My question: Is there a more efficient test for an empty sequence than

  count($seq) = 0




=====
Cheers,

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




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