Ruby Lookup Chain Exercise

Activity 1

Examine the code in this repository and diagram the Object Model for a Chair instance.

Activity 2

The Chair class has several superclasses and modules where Ruby can look for methods. At the bottom of the chair.rb file, a new instance of chair is created and the chair_type method is called on that instance. Your job is to comment out sections of the code in order to get chair_type to print each of the following:

1. "method"
2. "class"
3. "module"
4. "superclass"
5. "superclass's module"
6. "superclass's superclass"

Wrap Up

• How does Ruby’s look up chain work? What is the order it checks things?
• What are three methods you can use to learn about where a built in Ruby method gets its components?
• Draw a diagram of where Ruby would look for the method ::new