Re: () equivalent to () ?
> Is the empty sequence equal to itself? XPath2 has several notions of equality (=, eq, is, deep-equal) ( concat("[",()=(),"]"), concat("[",() eq (),"]"), concat("[",() is (),"]"), concat("[",deep-equal((),()),"]") ) evaluates to [false]   [true] so the answer depends on what you mean by equality. Note that ( concat("[",()!=(),"]"), concat("[",() ne (),"]") ) evaluates to [false]  so () = () is false and () != () is also false. (This is teh same as in xslt1 and is an automatic consequnce of teh implied existential quantification in the definition of = and !=. David ________________________________________________________________________ This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________
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