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RE: [xsl] RE: Muenchian technique, was (Keys on multiple element types)
Subject: RE: [xsl] RE: Muenchian technique, was (Keys on multiple element types)|
Date: Tue, 5 Feb 2002 14:22:17 -0000
> > Mike, your books states that the  is redundant for the Muenchian
> > technique, yet it keeps getting repeated.
> The  is indeed redundant, because generate-id(), if given
> a set of more
> than one node, returns the id for the first one. But I think
> using the 
> is good practice, as it documents clearly what you're doing.
> Also, with XSLT 2.0 we might start to see processors that
> choose to do more
> rigorous type-checking, and although omitting the  will
> still work, some
> processors might give you a warning. In XPath 2.0 we say that
> supplying a
> sequence where a singleton is expected is a type exception,
> from which an
> XSLT processor should recover by taking the first item in the
> sequence: but
> as with conditions like having conflicting template rules, we
> don't say the
> processor can't produce a warning first.
<grin/> So Jeni, perhaps we could say Mike was (sorta) wrong,
even if he wasn't, really (When else do we get such a chance?) :-)
I'll stick with leaving the predicate in.
Good advice Mike.
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