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irb(main):006:0> Socket.getaddrinfo("127.0.0.1", 0)[1][1] => 0 irb(main):007:0> Socket.getaddrinfo("127.0.0.1", 0)[1][2] => "localhost" irb(main):008:0> Socket.getaddrinfo("127.0.0.1", 0)[2][2] NoMethodError: undefined method `[]' for nil:NilClass from (irb):8 irb(main):009:0> Socket.getaddrinfo("127.0.0.1", 0) => [["AF_INET", 0, "localhost", "127.0.0.1", 2, 2, 17], ["AF_INET", 0, "localhost", "127.0.0.1", 2, 1, 6]]
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