Design patterns
Design patterns are a set of well-studied solutions to commonly occurring design situations. These patterns provide mechanisms to solve complex problems in a structured and reusable way. Design patterns were first introduced by Christopher Alexander, who was an architect and design theorist. In 1977, he published a book titled A Pattern Language: Towns, Buildings, Construction. His work was later adapted by programmers and developers to organize their work, which led to the creation of software design patterns. This eventually led to the publication of Design Patterns: Elements of Reusable Object-Oriented Software by the Gang of Four. The Gang of Four includes Erich Gamma from Eclipse, IBM, and Microsoft, Richard Helm from IBM, Ralph Johnson from Xerox, and John Vissides from IBM.
Design patterns are important in software design, as they provide a common language for designers to refer to their ideas and proposed solutions. Design patterns allow designers to use...