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ANN: Function Composition and Recursion in XPath 3.0

Hi Folks,

XPath has become a much more functional language with the arrival of XPath 3.0. That is very exciting.

This paper shows how to implement, using XPath 3.0, two key functional capabilities:

1.	function composition
2.	recursion 

These capabilities will be implemented using unnamed (anonymous) functions. 

At the time of this writing the XPath specification is still a working draft. Nonetheless, SAXON has implemented all the capabilities described in this paper. So, you can experiment with these capabilities today.

Thanks to Dimitre Novatchev and Michael Kay for showing me how to implement these capabilities.

More ... http://www.xfront.com/XPath3-0/Function-Composition-and-Recursion-in-XPath-3.pdf


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