map:contains
Tests whether a particular key is present in a map. Returns true if the candidate key is present in the map, otherwise false.
contains($map as map(*), $key as xs:anyAtomicType) ➔ xs:boolean
Arguments | |||
| $map | map(*) | The input map |
| $key | xs:anyAtomicType | The candidate key |
Result | xs:boolean | ||
Namespace
http://www.w3.org/2005/xpath-functions/map
Links to W3C specifications
XPath 3.1 Functions and Operators
Saxon availability
Available in XPath 3.1, XSLT 3.0, and XQuery 3.1. From Saxon 9.7, available in all editions.
Notes on the Saxon implementation
Available as defined in XSLT 3.0 since Saxon 9.4; in XSLT, XPath, and XQuery, whether or not 3.0 is available.
XPath 3.1 version implemented since Saxon 9.7.