Blackie的失敗筆記

Before Patterns

Design is not just what it looks like and feels like. design is how it works. - Steve Jobs

Design is to design a design to produce a design.

Selection is not design, design is a decision.

OOD Six Essentials

• Class, Object, Instance
• Interface
• Inheritance
• Polymorphism
• Composition
• Delegation

OOD Six Principle

• 模組化
• 少耦合多內聚
• 找出hot spot
• 多樣性原則
• Progamming to an Interface, not an Implementation
• Favor object composition over class inheritance

Design Patterns Intro

• 一再重複出現的東西、事件、現象、行為都可稱為模式
• Each pattern is a three-part rule:context, problem, solution=> A pattern is a proven solution to a recurring problem in a specific context, and more.
  • Context(內容-解決前)
  • Problem(問題本身)
  • Forces(作用力-問題的限制或特性)
  • Solution(解決問題的方法)
  • Resulting Context(解決後之內容-套用解決方法後的結果)

依據用途，設計模式可分為三大類

• Creational Patterns (生成模式)
  • Abstract Factory
  • Builder
  • Factory Method
  • Prototype
  • Singleton
• Structural Patterns (結構模式)
  • Adapter
  • Bridge
  • Composite
  • Decorator
  • Façade
  • Flyweight
  • Proxy
• Behavioral Patterns (行為模式)
  • Chain of Responsibility
  • Command
  • Interpreter
  • Iterator
  • Mediator
  • Memento
  • Observer
  • State
  • Strategy
  • Template Method
  • Visitor

依據內部關係，設計模式可分為另 外三大類

• Abstract Coupling (抽象耦合)
  • State
  • Factory Method
  • Observer
  • Bridge
  • Builder
  • Command
  • Iterator
  • Visitor
  • Interpreter
  • Mediator
  • Adapter
  • Prototype
  • Proxy
  • Strategy
• Recursive Structures (遞迴結構)
  • Composite
  • Chain of Responsibility
  • Decorator
• Other Patterns (其他)
  • Abstract Factory
  • Flyweight
  • Singleton
  • Template Method
  • Memento

GoF書的23個設計模式

• 5個生成模式 – Abstract Factory, Builder, Factory Method, Prototype, Singleton
• 7個結構模式 – Adapter, Bridge, Composite, Decorator, Façade, Flyweight, Proxy
• 11個行為模式 – Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Observer, State, Strategy, Template Method, Visitor

Other

參考資源

• Design Patterns這樣學就會了：入門班 Day1 教材