This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Date.wday (from ruby core) --- d.wday -> fixnum --- Returns the day of week (0-6, Sunday is zero). Date.new(2001,2,3).wday #=> 6
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.