Object Oriented Programming and Object Oriented Design

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Singleton pattern Unleashed in C# by Chandramouli Muralidaran on Oct 03, 2009

Abstract Class vs Interface by Prasoon on Jun 10, 2009
This tutorial will try to explain difference between Abstract Class and interface theoratically and programitically both ways.

The quest for the Generic Singleton in C# by Jeroen van den Heuvel on Mar 09, 2009
While it is a bit tricky to implement the Singleton pattern in C#, the steps necessary are well known. There has however been debate about a generic solution for this. This paper provides 3 possible solutions for the generic singleton, and makes a brief comparison.

Downcasting in C# by Scott Lysle on Mar 02, 2009
This article describes a simple approach to downcasting in C#; downcasting merely refers to the process of casting an object of a base class type to a derived class type. Upcasting is legal in C# as the process there is to convert an object of a derived class type into an object of its base class type. In spite of the general illegality of downcasting you may find that when working with generics it is sometimes handy to do it anyway.

The third pillar of object-oriented programming - polymorphism: by Amr Monjid on May 29, 2008
In the last part of this series you will see the third pillar of object-oriented programming (polymorphism); you will see how the polymorphism gives you the ability to treat related objects in the same way.

The second pillar of Object-Oriented Programming - Inheritance by Amr Monjid on May 22, 2008
In this part of the object-oriented programming series I will introduce the second pillar of object oriented programming (inheritance); you will see how to use inheritance to create classes based on existing classes.

The first pillar of object-oriented programming - Encapsulation by Amr Monjid on May 09, 2008
In this article we will start with Encapsulation, the first pillar of OOPS, you will learn the benefits of encapsulation and why to use it, you will learn how to enforce encapsulation by using (accessor and mutator) and by using properties.

Introduction to object oriented programming by Amr Monjid on May 09, 2008
This article will provide you an overview about the object-oriented programming main pillars (Encapsulation, Inheritance, and Polymorphism).


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