Why Use Design Patterns?
Design patterns provide good solutions to the problems that arise in the development of component features. These patterns explain the benefits and drawbacks of specific approaches and allow you to find the ideal solution quickly. Additionally, patterns provide an excellent description of how the resulting design works, thus reducing the time and effort required to explain each specific design. And, of course, reducing the documentation effort reduces development costs. Design patterns can also minimize training requirements because they provide clear, well-documented examples of good design. But design patterns have even more advantages. Because each one discusses how it can work with other patterns, you can easily find ways to extend your existing designs when new or more flexible features must be incorporated into an evolving system. As your library of component features expands, existing applications can automatically receive feature enhancements if you are careful to encapsulate t
