Design Patterns

Design patterns are reusable solutions to common problems that arise in software design. The concept of design patterns originated from the field of architecture and anthropology, where patterns were observed and documented in the designs of buildings and the behaviors of societies.

Design patterns are important in software design as they provide a proven and efficient way to solve recurring design problems. They promote code reusability, maintainability, and scalability, and help in creating well-structured and modular software systems.

Design patterns in the discipline of software design originated from the book 'Design Patterns' published by the 'Gang of Four' in 1995. The authors cataloged 23 patterns they found in real software systems, applying the concept of patterns to software design.

<p>One example of a design pattern discussed in the text is the 'Delegate' pattern, which was introduced in Chapter 4. The Delegate pattern is used to achieve loose coupling between objects by allowing one object to delegate a task to another object.</p> Signup and view all the answers

<p>Design patterns play a significant role in object-oriented technology as they provide reusable solutions to common design problems. They help in designing flexible and extensible software systems by promoting the principles of encapsulation, inheritance, and polymorphism.</p> Signup and view all the answers