Tabla de Contenidos: “…A real-world scenario - the Singleton pattern, part 2Drawbacks of the Singleton pattern; Summary; Chapter 3: Factory Pattern - Building Factories to Create Objects ; Understanding the Factory pattern; The Simple Factory pattern; The Factory Method pattern; Implementing the Factory Method; Advantages of the Factory method pattern; The Abstract Factory pattern; Implementing the Abstract Factory pattern; The Factory Method versus Abstract Factory; Summary; Chapter 4: The Façade Pattern - Being Adaptive with Façade ; Understanding Structural design patterns…”