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Visual C# 2010: How to Program, Fourth Edition by Harvey Deitel, Paul Deitel

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Chapter 12. OOP: Polymorphism, Interfaces and Operator Overloading

 

One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them.

 
 --John Ronald Reuel Tolkien
 

General propositions do not decide concrete cases.

 
 --Oliver Wendell Holmes
 

A philosopher of imposing stature doesn’t think in a vacuum. Even his most abstract ideas are, to some extent, conditioned by what is or is not known in the time when he lives.

 
 --Alfred North Whitehead
<feature> <supertitle>Objectives</supertitle>

In this chapter you’ll learn:

<objective>

How polymorphism enables you to “program in the general” and make systems extensible.

</objective>
<objective>

To use overridden methods to effect polymorphism.

</objective>
<objective> ...

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