29626 2016-05-15 18:02:10 +0000 fn:fold-left in appendix - calls not correct 2016-07-21 14:14:13 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Functions and Operators 3.1 Candidate Recommendation PC Windows NT CLOSED DUPLICATE 28885 P2 normal --- 1 hrennau mike public-qt-comments oldest_to_newest 126435 0 hrennau 2016-05-15 18:02:10 +0000 In the appendix, examples use incorrect invocations of fn:fold-left - the order of arguments is ($f, $zero, $seq) - whereas it should be ($seq, $zero, $f). This concerns the following examples (XSLT and XQuery): * eg:distinct-nodes-stable * eg:higheest * eg:lowest Example: declare function eg:highest( $f as function(item()) as xs:anyAtomicType, $seq as item()*) as item()* { fn:fold-left( function($highestSoFar as item()*, $this as item()*) as item()* { let $thisValue := $f($this) let $highestValue := $f($highestSoFar[1]) return if ($thisValue gt $highestValue) then $this else if ($thisValue eq $highestValue) then ($highestSoFar, $this) else $highestSoFar }, fn:head($seq), fn:tail($seq)) }; 126436 1 hrennau 2016-05-15 18:20:30 +0000 There is a second bug hidden in the examples eg:highest and eg:lowest: the inline function expression passed to fn:fold-left is function($highestSoFar as item()*, $this as item()*) as item()* {...} Note the second parameter: $this as item()* which is incorrect - it should be $this as item() (no occurrence indicator). 126477 2 mike 2016-05-23 11:48:27 +0000 Thanks for reporting it. The problem was fixed as part of the resolution of bug #28885. *** This bug has been marked as a duplicate of bug 28885 ***