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class Nested
    def [](s)
        puts s.to_s
        return self
    end
end
 
x = Nested.new
x[:Hello][:World]

Success #stdin #stdout 0.01s 7408KB

stdin

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Standard input is empty

stdout

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Hello
World

https://ideone.com/UE4u7r

language:

Ruby (ruby 2.5.5)

created:

visibility:

secret

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