fn:do-until

Processes a supplied value repeatedly, continuing when some condition is false, and returning the value that satisfies the condition.

do-until($input as item()*, $action as fn(item()*, xs:integer) as item()*, $predicate as fn(item()*, xs:integer) as xs:boolean?) ➔ item()*

Arguments

 

$input

item()*

The input value

 

$action

fn(item()*, xs:integer) as item()*

The function to be applied to the value iteratively

 

$predicate

fn(item()*, xs:integer) as xs:boolean?

The predicate function

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. Requires Saxon-PE or Saxon-EE. Implemented since Saxon 13. Available for all platforms.