This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# JSON::NestingError < JSON::ParserError (from ruby core) --- This exception is raised if the nesting of parsed data structures is too deep. ---
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.