Function signature
$function |
xs:string |
Result |
xs:boolean |
Determines whether a particular function is available in the context
Implemented. Extended in 8.1 to recognize the names of stylesheet functions, constructor functions, and Java extension functions as well as system functions, whether or not the first argument is known at compile time.
Function signature
$function |
xs:string |
$arity |
xs:integer |
Result |
xs:boolean |
Determines whether a particular function is available in the context. The two-argument version of the function was added during the Last Call period.
Implemented in Saxon 7.9. Extended in 8.1 to recognize the names of stylesheet functions, constructor functions, and Java extension functions as well as system functions, whether or not the first argument is known at compile time.