Changes

The lookup operator provides some syntactic sugar to access values of maps or array members at a specified position. It is introduced by the question mark ({{Code|?}}) and followed by a specifier. The specifier can be:

for let $map in maps := (

return $mapmaps[?name = 'Hildur'] ?city

In BaseX, The {{Code|adaptive}} is used as the new default serialization method. It provides a intuitive textual representation for all XDM types, including maps and arrays, functions, attributes, and namespaces. All items will be separated using by the value of the {{Code|item-separator}} parameter, or which by default is a newline if no value character. It is specifiedutilized by the functions <code>[[Profiling Module#prof:dump|prof:dump]]</code> and <code>[http://www.w3.org/TR/xpath-functions-31/#func-trace fn:trace]</code>. Example:

id="id0"xs:token("abc"),map {

function fn:true#0

===fn:json-docsdoc===

* <code>fn:sort($input as item()*, $collation as xs:string?) as xs:anyAtomicType*)) as item()*</code>* <code>fn:sort($input as item()*, $collation as xs:string?, $key as function(item()*) as xs:anyAtomicType*)) as item()*</code>

Returns a new sequence with sorted {{Code|$input}} items, using an optional {{Code|$collation}}. If a sort {{Code|$key}} function is givensupplied, it will be applied on all items. The items of the resulting values will be sorted using the semantics of the {{Code|lt}} expression.

sort(reverse(1 to 3)) (: yields 1, 2, 3 :),reverse(sort(1 to 3)) (: returns the sorted order in descending order :),sort((3, -2, 1), (), abs#1) (: yields 1, -2, 3 :),sort((1,2,3), (), function($x) { -$x }) (: yields 3, 2, 1 :),sort((1, 'a')) (: yields an error, as strings and integers cannot be compared :)

* Updated: [[#Adaptive Serialization|Adaptive Serialization]], [[#fn:string-join|fn:string-join]]

* Updated: arrays are now based on an efficient a [http://en.wikipedia.org/wiki/Finger_tree Finger Tree] implementation.