This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Date.cweek (from ruby core) --- d.cweek -> fixnum --- Returns the calendar week number (1-53). Date.new(2001,2,3).cweek #=> 5
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.