自定义splat

# Custom Splat

class Netrc
  Entry = Struct.new(:login, :password) do
    alias_method :to_ary, :to_a
  end
end

e = Netrc::Entry.new("user", "qwerty")
e.login # => "user"
e[:password] # => "qwerty"
e[1] # => "qwerty"
login, password = e