This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Socket.ipv6only! (from ruby core) --- ipv6only!() --- enable the socket option IPV6_V6ONLY if IPV6_V6ONLY is available.
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.