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→Arrays
</pre>
The function corresponding to the array has the signature {{Code|function($index as xs:integer) as item()*}}. The expression {{Code|$array($index)}} returns an addressed member of the array. The following query returns the five array members {{Code|48 49 50 51 52}} as result:
<pre class="brush:xquery">
return $array($i)
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Like all other values, arrays are immutable. For example, the <code>[[Array Module#array:reverse|array:reverse]]</code> function creates a new array containing a re-ordering of the members of an existing array, but the existing array is not changed by the operation. Like sequences, arrays have no identity. It is meaningful to compare the contents of two arrays, but there is no way of asking whether they are "the same array": two arrays with the same content are indistinguishable.
