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5.3.6.23. lastItem

Returns the last item in the array or .nil if the array is empty.
Example 5.182. Array class — lastItem method
musketeers=.array~of("Porthos","Athos","Aramis")  /* Creates array MUSKETEERS      */
item=musketeers~lastItem                          /* Gives last item in array      */
                                                  /* (Assigns "Aramis" to item)    */