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Creating XPath2 functions:passing a set of nodes, what is the signature construction?

2006-01-25 14:26:00
I am learning XPath2 using Saxon 8.6. I'd like to create a funtion to compute 
the standard deviation of the value of a set of nodes. Is there some special 
way to construct the signature of the function when the argument is a set of 
nodes as opposed to a single node?

I have written a funtion that takes a single node as an argument of type 
xs:double. Is there some special way to state that the function will take a set 
of nodes of type xs:double, or do I simply state that the argument will be of 
type xs:double?

-- 
Charles Knell
cknell(_at_)onebox(_dot_)com - email

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