Metaprogramming Ruby 2

Quiz: Missing Lines

Where you find your way around the Ruby object model.

Back in ​The Truth About Classes​, Bill showed you how objects and classes are related. As an example, he used a snippet of code and this whiteboard diagram:

class MyClass; end
obj1 = MyClass.new
obj2 = MyClass.new

The diagram shows some of the connections between the program entities. Now it’s your turn to add more lines and boxes to the diagram and answer these questions:

• What’s the class of Object?
• What’s the superclass of Module?
• What’s the class of Class?
• Imagine that you execute this code:

  obj3 = MyClass.new
  obj3.instance_variable_set("@x", 10) ...