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sum()

The sum() function converts the nodes in the argument node-set to numbers and then totals those numbers.

Syntax:
number sum(node-set)
Arguments:
Must be a node-set. The nodes are converted to numbers using the rules of the number() function.
Result:
A number, the sum of the values of all the nodes. If any of the nodes cannot be converted into numbers, the result is NaN. If the node-set is empty, the result is zero.
Defined: XPath, section 4.2.
NS support: Supported.
Comments? devdoc-feedback@netscape.com
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