Yes, I know this, and use them quite a bit in my stylesheets. I was
referring to the higher-order functions that Dmitre is
interested in.
The FXSL docs assume a fairly specific audience that is not me.
Consider two important bits of functionality that are present in XSLT 2.0
but not in XQuery 1.0: analyze-string and for-each-group. These needed
custom syntax in XSLT 2.0: they couldn't be implemented as standard
functions, because they are higher-order - they take functions (or
instructions) as their arguments. It's difficult to define custom syntax in
XQuery, which is why these facilities were omitted. But with higher-order
functions, you can implement these facilities without any new syntax, and
indeed I have done so for the benefit of XQuery users: see
http://www.saxonica.com/documentation/extensions/functions/analyze-string.ht
ml
http://www.saxonica.com/documentation/extensions/functions/for-each-group.ht
ml
Michael Kay
http://www.saxonica.com/
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