Introduction to Design Patterns

Design patterns are reusable solutions to common software design and development problems. They provide a template to common scenarios. 23 design patterns were introduced in the Design Patterns: Elements of Reusable Object-Oriented Software book.

In this section, each design pattern’s core idea, where it is used, and how it is implemented is explained.

3 types:

• Creational
  • Builder Pattern
  • Singleton Pattern
  • Factory Pattern
  • Abstract Factory Pattern
  • Prototype Pattern
• Structural
  • Adapter Pattern
  • Bridge Pattern
  • Composite Pattern
  • Decorator Pattern
  • Facade Pattern
  • Flyweight Pattern
  • Proxy Pattern
• Behavioral
  • Chain of Responsibility Pattern
  • Command Pattern
  • Interpreter Pattern
  • Iterator Pattern
  • Mediator Pattern
  • Momento Pattern
  • Observer Pattern
  • Strategy Pattern
  • State Pattern
  • Template Method Pattern
  • Visitor Pattern