fn:filter

Returns those items from the sequence $seq for which the supplied function $f returns true.

filter($seq as item()*, $f as function(item()) as xs:boolean) ➔ item()*

Arguments
	$seq	item()*	The sequence to be filtered
	$f	function(item()) as xs:boolean	The filtering function (used to test each item in the sequence)
Result		item()*

Namespace

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

Links to W3C specifications

XPath 3.0 Functions and Operators

XPath 3.1 Functions and Operators

Notes on the Saxon implementation

Available in Saxon 9.3 - 9.5 with altered argument order ($f,$seq), and provided XPath 3.0 is enabled.