Topic 11: Revision of OO Concepts

Synopsis

• Abstraction^¤
   
• Encapsulation^¤
   
• Typing^¤
   
• Inheritance^¤
   
• Polymorphism^¤
   
• Genericity^¤

Abstraction^¤

• What is "abstraction^¤"?
   
• What types of abstraction^¤ are there?
   
• Why is abstraction^¤ important in the real world?
   
• Why is abstraction^¤ important in programming?
   
• Give examples of abstraction^¤ mechanisms in C++.

Encapsulation^¤

• What is "encapsulation^¤"?
   
• What are the benefits of encapsulation^¤?
   
• What are the drawbacks of encapsulation^¤?
   
• If computing is about making data available in useful forms, why is data hiding important?
   
• How does encapsulation^¤ relate to abstraction^¤?

Typing^¤

• What is "weak typing^¤¤"?
   
• What is "strong typing^¤¤"?
   
• Which kind of typing^¤ does C++ have?
   
• What is "static typing^¤¤"?
   
• What is "dynamic typing^¤¤"?
   
• Which kind of typing^¤ does C++ have?

Inheritance^¤

• What is "inheritance"?
   
• Why is inheritance useful?
   
• In an OO programming language what kinds of things can be inherited?
   
• What is the relationship between a class^¤ and it parent class^¤¤?
   
• What is "multiple inheritance^¤"?
   
• Why do we say that multiple inheritance^¤ creates "directed acyclic inheritance graphs"?
   
• How does inheritance relate to abstraction^¤?

Polymorphism^¤

• What is "polymorphism^¤"?
   
• How does polymorphism^¤ relate to inheritance?
   
• How does polymorphism^¤ relate to abstraction^¤?
   
• What is "dynamic dispatch^¤¤"?

Genericity^¤

• What is "genericity^¤"?
   
• How does genericity^¤ relate to abstraction^¤?
   
• Why isn't it always sufficient just to provide a generic^¤ version of a particular function?