Contents

require 'enumerator'
if (Enumerable::Enumerator rescue false)
  module Enumerable
    class Enumerator
      # Standard in Ruby 1.8.7+. See official documentation[http://ruby-doc.org/core-1.9/classes/Enumerator.html]
      Backports.make_block_optional self, :each, :test_on => [42].to_enum

      def next
        require 'generator'
        @generator ||= ::Generator.new(self)
        raise StopIteration unless @generator.next?
        @generator.next
      end unless method_defined? :next

      def rewind
        @object.rewind if @object.respond_to? :rewind
        require 'generator'
        @generator ||= ::Generator.new(self)
        @generator.rewind
        self
      end unless method_defined? :rewind

      def with_index(offset = 0)
        to_enum :with_index, offset unless block_given?
        each do |*args|
          yield args.size == 1 ? args[0] : args, index
          index += 1
        end
      end unless method_defined? :with_index
    end if const_defined? :Enumerator
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
backports-3.0.3	lib/backports/1.8.7/enumerator.rb
backports-3.0.2	lib/backports/1.8.7/enumerator.rb
backports-3.0.1	lib/backports/1.8.7/enumerator.rb
backports-3.0.0	lib/backports/1.8.7/enumerator.rb