This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Pathname.birthtime (from ruby core) --- pathname.birthtime -> time --- Returns the birth time for the file. If the platform doesn't have birthtime, raises NotImplementedError. See File.birthtime.
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.