This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Symbol.size (from ruby core) --- size() --- Same as `sym.to_s.length`. (This method is an alias for Symbol#length.) Same as `sym.to_s.length`.
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.