2018-fumichan-thesis / practice / vendor / bundle / ruby / 2.5.0 / gems / backports-3.11.4 / lib / backports / 1.8.7 / enumerable / none.rb

unless Enumerable.method_defined? :none?
  module Enumerable
    def none?(&block)
      !any?(&block)
    end
  end
end