Array Module

This XQuery Module contains functions for manipulating arrays, which will officially be introduced with XQuery 3.1.
Please note that the functions are subject to change until the specification has reached its final stage.

Conventions

All functions in this module are assigned to the http://www.w3.org/2005/xpath-functions/array namespace, which is statically bound to the array prefix.

Functions

array:size

Signatures	array:size($input as array(*)) as xs:integer
Summary	Returns the number of members in the supplied array. Note that because an array is an item, the fn:count function when applied to an array always returns 1.
Examples	array:size([1 to 10]) returns 10. array:size(array { 1 to 10 }) returns 10.

array:append

Signatures	array:append($array as array(*), $insert as item()*) as array(*)
Summary	Adds one member at the end of the array. The result is an array whose size is array:size($array) + 1, in which all members in positions 1 to array:size($array) are the same as the members in the corresponding position of $array, and the member in position array:size($array) + 1 is $insert.
Examples	array:append([], 'member1') returns the array ["member1"].

array:subarray

Signatures	array:subarray($array as array(*), $start as xs:integer) as array(*) array:subarray($array as array(*), $start as xs:integer, $length as xs:integer) as array(*)
Summary	Gets an array containing all members from a supplied array starting at a supplied position, up to a specified length. The two-argument version of the function returns the same result as the three-argument version when called with $length equal to the value of array:size($array) - $start + 1.
Examples	array:append([], 'member1') returns the array ["member1"].

array:serialize

Signatures	map:serialize($input as map(*)) as xs:string
Summary	This function is specific to BaseX. It returns a string representation of the supplied array. The purpose of this function is to get an insight into the structure of an array item; it cannot necessarily be used for reconstructing the original array.
Examples	array:serialize([ 1, (2, 3), 4 to 6 ]) returns [1, (2, 3), (4, 5, 6)].

Changelog

Introduced with Version 8.0.