Abstract methods

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Abstract

Abstract The abstract modifier can be used with classes, methods, properties, indexers, and events. Use the abstract modifier in a class declaration to indicate that a class is intended only to be a base class of other classes. Abstract classes have the following features: An abstract class cannot be instantiated. An abstract class may contain abstract methods and accessors. It...

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Singleton - [Creational Patterns]

Singleton Definition Ensure a class has only one instance and provide a global point of access to it. This structural code demonstrates the Singleton pattern which assures only a single instance (the singleton) of the class can be created. namespace Singleton {     class Program     {         static void Main(string[]...

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