fn:highest

Returns those items from a supplied sequence that have the highest value of a sort key, where the sort key can be computed using a caller-supplied function.

highest($input as item()*, $collation as xs:string?:=fn:default-collation(), $key as (fn(item()) as xs:anyAtomicType*)?:=fn:data#1) ➔ item()*

Arguments
	$input	item()*		The input sequence
	$collation	xs:string?	:= fn:default-collation()	The collation used for comparing strings
	$key	(fn(item()) as xs:anyAtomicType*)?	:= fn:data#1	A function used for computing sort keys
Result		item()*

Namespace

http://www.w3.org/2005/xpath-functions

Links to W3C specifications

XPath 4.0 Functions and Operators

Saxon availability

Available in XPath 4.0, XSLT 4.0, and XQuery 4.0, provided that 4.0 features are enabled (see Enabling 4.0 features). Requires Saxon-PE or Saxon-EE. Implemented since Saxon 11. Available for all platforms.

Notes on the Saxon implementation

Available since Saxon 13 in XPath 4.0. Available since Saxon 11 provided that syntax extensions are enabled.