This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.


        # Gem::RubyVersionMismatch < Gem::Exception

(from ruby core)
Raised when a gem dependencies file specifies a ruby version that does
not match the current version.


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.