Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Returns True if the function is in the function library.
boolean function-available(string)
Remarks
The argument must evaluate to a string that is a QName. The QName is expanded into an expanded-name using the namespace declarations in scope for the expression. The function-available function returns True if and only if the expanded-name is the name of a function in the function library. If the expanded-name has a non-null namespace Uniform Resource Identifier (URI), it refers to an extension function; otherwise, it refers to a function defined by XML Path Language (XPath) or XSLT.
Example
The following function call returns True.
function-available("format-number")