This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Time.hour (from ruby core) --- time.hour -> integer --- Returns the hour of the day (0..23) for *time*. t = Time.now #=> 2007-11-19 08:26:20 -0600 t.hour #=> 8
This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.