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@shugo /test.rb
Created Oct 31, 2012

using example
module X
refine Fixnum do
def foo; p :foo; end
end
end
module Y
refine Fixnum do
def bar; p :bar; end
end
end
module Z
using X
using Y
end
class Foo
using Z
p 1.foo
p 1.bar
end
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