Oct 15, 2006. This is a special Teaching Edition of "Beginning Ruby" solely for use in a class given by Peter Cooper. How RuBy Understands concepts with OBjects and classes. 17. Where to Go Next: References, Books, and Example Apps. 386. Sinatra. RuBy-GNOME2. JRuBy and MonkeyBars. Sep 8, 2016. Ruby 2.4 unify Fixnum and Bignum into Integer. [Feature. JRuby: –263 to 263–1. The range is not. Example: Programming Ruby, 2nd edition, p.59. ruby- gnome2 microangelo.inforuby-gnome2/ruby-gnome2/commit/ .