# File lib/rspec/core/world.rb, line 31
      def initialize(configuration=RSpec.configuration)
        @configuration = configuration
        @example_groups = []
        @filtered_examples = Hash.new { |hash,group|
          hash[group] = begin
            examples = group.examples.dup
            examples = apply_exclusion_filters(examples, exclusion_filter)
            examples = apply_inclusion_filters(examples, inclusion_filter)
            examples.uniq
          end
        }
      end