and and or are control-flow modifiers like if and unless. http://devblog.avdi.org/2010/08/02/using-and-and-or-in-ruby/ http://devblog.avdi.org/2010/08/02/using

and and or are control-flow modifiers like if and unless. http://devblog.avdi.org/2010/08/02/using-and-and-or-in-ruby/ http://devblog.avdi.org/2010/08/02/using-and-and-or-in-ruby/