2018-fumichan-thesis / sinatra-practice / form-sample / vendor / bundle / ruby / 2.5.0 / gems / backports-3.11.4 / lib / backports / 1.9.1 / symbol / casecmp.rb

unless Symbol.method_defined? :casecmp
  class Symbol
    def casecmp(with)
      return nil unless with.is_a? Symbol
      to_s.casecmp(with.to_s)
    end
  end
end