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Difficulty Level: AllBeginnerIntermediateExpert
Ques 1. What is the convention using ‘!’ at the end of method name?
Ques 2. Explain the difference between a has_one and belongs_to association in Ruby on Rails.
Ques 3. What is a Proc?
Ques 4. What are the three levels of method access control for classes and what do they signify? What do they imply about the method?