This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.


        # TypeError < StandardError

(from ruby core)
Raised when encountering an object that is not of the expected type.

    [1, 2, 3].first("two")

*raises the exception:*

    TypeError: no implicit conversion of String into Integer


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.