XPath Boolean Functions

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4/8/2010

The XML Path Language (XPath) syntax supports Boolean functions that return strings or numbers, and can be used with comparison operators in filter patterns.

The following table shows the Boolean functions implemented by XPath.

Function	Description
boolean Function	Converts the argument to a Boolean.
false Function	Returns False.
lang Function	Returns True if the xml:langattribute of the context node is the same as the argument string.
not Function	Returns True if the argument is false, and a false otherwise.
true Function	Returns True.

See Also

Reference