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

StopIteration 

        # StopIteration < IndexError

(from ruby core)
---
Raised to stop the iteration, in particular by Enumerator#next. It is
rescued by Kernel#loop.

    loop do
      puts "Hello"
      raise StopIteration
      puts "World"
    end
    puts "Done!"

*produces:*

    Hello
    Done!
---
# Instance methods:

    result

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.