This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# IPAddr.netmask (from ruby core) --- netmask() --- Returns the netmask in string format e.g. 255.255.0.0
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.