Understanding design patterns
Design patterns are shared among programmers and continue to be improved over time. This topic is popular thanks to the book by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, titled Design Patterns: Elements of Reusable Object-Oriented Software.
Gang of Four
The book by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides is also called the Gang of Four book for short (or the GOF book for an even shorter name).
Generally, a design pattern helps the programmer create a commonly used implementation pattern, especially in object-oriented programming (OOP). The benefits of viewing applications from the design pattern's perspective are plenty. First, it narrows down the most effective ways of building a given application and the necessary steps to do it. Second, you could consult existing examples of the same design pattern to improve your application. Overall, design patterns are highly useful guidelines in software engineering...
