This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# File::Stat.dev (from ruby core) ### Implementation from Stat --- stat.dev -> integer --- Returns an integer representing the device on which *stat* resides. File.stat("testfile").dev #=> 774
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.