map:size

Returns the number of entries (key/value pairs) in the supplied map.

size($map as map(*)) ➔ xs:integer

Namespace

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

Links to W3C specifications

XPath 3.1 Functions and Operators

XPath 4.0 Functions and Operators

XSLT 3.0 Specification

Saxon availability

Available in XPath 3.1, XSLT 3.0, XQuery 3.1, and later versions. From Saxon 9.7, available in all editions. Available for all platforms.

Notes on the Saxon implementation

Available as defined in XSLT 3.0 since Saxon 9.6; in XSLT, XPath, and XQuery, whether or not 3.0 is available.

XPath 3.1 version implemented since Saxon 9.7.