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2018-fumichan-thesis / sinatra-practice / form-sample / vendor / bundle / ruby / 2.5.0 / gems / backports-3.11.4 / lib / backports / 1.8.7 / integer / odd.rb
@Fumichan Fumichan on 6 Dec 2018 105 bytes mv sample sinatra-practice, add sinatra-practice/Sinatra-ActiveRecord.pdf
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unless Integer.method_defined? :odd?
  class Integer
    def odd?
      !self[0].zero?
    end
  end
end