Removes all elements of the array.
clear()
This method clears the array, by removing all its elements.
Use the clear() method just before filling the array with a new set of elements, if the array is potentially not empty.
FUNCTION fill_array(arr)
DEFINE arr DYNAMIC ARRAY OF STRING
DEFINE i INTEGER
CALL arr.clear()
FOR i=1 TO 10
LET arr[i] = "Item #"||i
END FOR
END FUNCTION