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

remove_class_variable 

        # Module.remove_class_variable

(from ruby core)
---
    remove_class_variable(sym)    -> obj

---

Removes the named class variable from the receiver, returning that
variable's value.

    class Example
      @@var = 99
      puts remove_class_variable(:@@var)
      p(defined? @@var)
    end

*produces:*

    99
    nil

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.