Implements XPath functions -- each function is derived from Function,
FunctionOneArg, Function2Args, etc, with number-of-arguments checking being
applied mainly at compile time -- this package only implements XPath functions,
XSLT functions are found in the "templates" package.
Implements XPath functions -- each function is derived from Function, FunctionOneArg, Function2Args, etc, with number-of-arguments checking being applied mainly at compile time -- this package only implements XPath functions, XSLT functions are found in the "templates" package.