Contents

module Sbuilder
    
  module Powerset

    # @see http://www.entish.org/wordpress/?p=676
    def self.powerset( arr )
        return arr.inject([[]]){|c,y|c.inject([]){|r,i|r+=[i,i+[y]]}}
      end

  end

end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
tla-sbuilder-0.3.9	lib/utils/powerset.rb
tla-sbuilder-0.3.8	lib/utils/powerset.rb
tla-sbuilder-0.3.7	lib/utils/powerset.rb
tla-sbuilder-0.3.4	lib/utils/powerset.rb