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

UncaughtThrowError 

        # UncaughtThrowError < ArgError

(from ruby core)
---
Raised when `throw` is called with a *tag* which does not have
corresponding `catch` block.

    throw "foo", "bar"

*raises the exception:*

    UncaughtThrowError: uncaught throw "foo"
---
# Class methods:

    new

# Instance methods:

    tag
    to_s
    value

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.