RosettaCodeData/Task/Symmetric-difference/Eiffel/symmetric-difference.e

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note
description: "Summary description for {SYMETRIC_DIFFERENCE_EXAMPLE}."
URI: "http://rosettacode.org/wiki/Symmetric_difference"
class
SYMETRIC_DIFFERENCE_EXAMPLE
create
make
feature {NONE} -- Initialization
make
local
a,a1,b,b1: ARRAYED_SET [STRING]
do
create a.make (4)
create b.make (4)
a.compare_objects
b.compare_objects
a.put ("John")
a.put ("Bob")
a.put ("Mary")
a.put ("Serena")
create a1.make (4)
a1.copy (a)
b.put ("Jim")
b.put ("Mary")
b.put ("John")
b.put ("Bob")
create b1.make (4)
b1.copy (b)
a1.subtract (b1)
b.subtract (a)
a1.merge (b)
across a1 as c loop
print (" " + c.item)
end
end
end