26476 2014-07-30 21:37:46 +0000 Signature of array:fold-right and array:fold-left 2014-11-17 09:46:48 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Functions and Operators 3.1 Working drafts All All CLOSED FIXED P2 normal --- 1 arve.gengelbach mike public-qt-comments oldest_to_newest 109608 0 arve.gengelbach 2014-07-30 21:37:46 +0000 Hej, just looking at the working draft on the array section. I know this is work in progress. However I’d like to know how the signature of array:fold-right (and left) is motivated. Present signature is … Section 17.3.13 array:fold-right array:fold-right( $array as array(*), $zero as item()*, $function as function(item()*) as item()* ) as array(*) I’d expect an array:fold-right to be equivalent to the query: declare function array:fold-right( $array as array(*), $zero as item()*, $function as function(item()*, item()*) as item()* ) as item()* { if (array:size($seq) = 0) then $zero else $function(array:head($array), fn:fold-right(array:tail($array), $zero, $function)) }; Hence the signature to be different to the one presently mentioned in the draft. This signature then would be in analogy to fn:fold-right. 109617 1 mike 2014-07-30 22:27:13 +0000 You're right - thanks for pointing out this error. 111140 2 mike 2014-09-07 13:58:53 +0000 Fixed in the next draft. 114989 3 mike 2014-11-17 09:46:48 +0000 For the record, this was not fully/correctly fixed in the Oct 2014 WD, and resurfaces as bug #27231