Author: Tianle Yuan

Desgin Patterns

Design pattern is a reusable solution to a commonly occurring problem in software design. It provides a general framework for solving a particular design problem, which can be adapted to suit the specific needs of a particular application.

Design patterns are typically classified into three categories:

Creational patternsStructural patternsBehavioral patterns

• Creational patterns
  • 1.1 Singleton
  • 1.2 Factory Method
  • 1.3 Abstract Factory
  • 1.4 Builder
  • 1.5 Prototype

• Structural patterns
  • 2.1 Adapter
  • 2.2 Bridge
  • 2.3 Composite
  • 2.4 Decorator
  • 2.5 Facade
  • 2.6 Flyweight
  • 2.7 Proxy

• Behavioral patterns
  • 3.1 Chain of Responsibility
  • 3.2 Command
  • 3.3 Interpreter
  • 3.4 Iterator
  • 3.5 Mediator
  • 3.6 Memento
  • 3.7 Observer
  • 3.8 State
  • 3.9 Strategy
  • 3.10 Template Method
  • 3.11 Visitor

The relationship among them can be seen in picture below:

Creational patterns

1.1 Singleton

1.2 Factory Method

1.3 Abstract Factory

1.4 Builder

1.5 Prototype

Structural patterns

2.1 Adapter

2.2 Bridge

2.3 Composite

2.4 Decorator

2.5 Facade

2.6 Flyweight

2.7 Proxy

Behavioral patterns

3.1 Chain of Responsibility

3.2 Command

3.3 Interpreter

3.4 Iterator

3.5 Mediator

3.6 Memento

3.7 Observer

3.8 State

3.9 Strategy

3.10 Template Method

3.11 Visitor

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