map:filter

Selects entries from a map, returning a new map.

filter($map as map(*), $predicate as fn($key as xs:anyAtomicType, $value as item()*, $position as xs:integer) as xs:boolean?) ➔ map(*)

Arguments
	$map	map(*)		The input map
	$predicate	fn($key as xs:anyAtomicType, $value as item()*, $position as xs:integer) as xs:boolean?		The function used to filter the input map
Result		map(*)

Namespace

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

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 12. Available for all platforms.

Notes on the Saxon implementation

Available since Saxon 13 in XPath 4.0. Available since Saxon 12 provided that syntax extensions are enabled.