This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Pathname.ftype (from ruby core) --- pathname.ftype -> string --- Returns "type" of file ("file", "directory", etc). See File.ftype.
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.