This session examines some of the most common Design Patterns in software development. Design Patterns provide simple, understandable, and sound solutions to often-daunting problems in class design and coding. Each problem will be examined before introducing its corresponding Design Pattern solution. Design Patterns covered include:

• Model View Presenter – separating user interface logic from the user interface to make the logic reusable and testable
• Factory - separating an object’s construction from its population and maintaining the Single Responsibility Principal
• Singleton – globally accessing connections, settings, and other objects in a manageable way without global variables
• Adapter – creating a common way of using different classes and libraries with different interfaces
• Façade – wrapping complex functionality into an easy-to-use package
• Lazy initialization – improving performance by delaying expensive processes until the first time they are needed