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wtf.rb
Ruby
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class A
def foo
"okay!"
end
 
module B
def foo
"not " + super
end
end
 
module C
def foo
"really " + super
end
end
end
 
class X < A
include B
include C
end
 
if __FILE__ == $0
puts X.new.foo # => prints 'really not okay'
end

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