RE: [xsl] XPath: all elements with only non-parent children with identical style attr

["Michael Kay" <michael.h.kay@xxxxxxxxxxxx>]

> Mike Kay wrote:
> > A != A, where A is a node-set, is true if there is some node
> > in A that is
> > unequal to another node in A.
>
> which surely blows out of the water the application of George Boole
> and his theorems to xslt?

There's never been any question about that: the XPath = and != operators are
clearly non-Boolean. Hence the discussion in XSLT Prog Ref (2nd ed) p 370.

Of course Boolean logic still applies once you expand the operators, reading

	A = B

as shorthand for

	some $a in A, $b in B satisfies $a = $b


Mike Kay


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