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==Arrays==
{{Version|8.1}}: Arrays are now based on an efficient [http://en.wikipedia.org/wiki/Finger_tree Finger Tree] implementation.
An ''array'' is a function that associates a set of positions, represented as positive integer keys, with values. The first position in an array is associated with the integer {{Code|1}}. The values of an array are called its members. In the type hierarchy, array has a distinct type, which is derived from function.
=Changelog=
;Version 8.1
* Updated: arrays are now based on an efficient [http://en.wikipedia.org/wiki/Finger_tree Finger Tree] implementation.
Introduced with Version 8.0.
[[Category:XQuery]]
