Jackbox. It toys with the ideas of closures as modules. In it
you’ll find a series of new takes on ruby that are sure to spike you
interest. With it we have come up with a solution to the decorator
handicap in ruby and introduced some new constructs for code injection.
Please feel free to use it free of charge and to send us your comments
or inquiries. Available from RubyGems.org. Just run: gem install