装饰者模式Decorator pattern

Reference article
http://pengguo.xyz/tutorial/2017/03/15/Swift-World-Design-Patterns-Decorator.html
https://medium.com/design-patterns-in-swift/design-patterns-in-swift-decorator-pattern-2026e7112869
https://medium.com/jeremy-codes/decorator-pattern-in-swift-e5fa11ea3c3f

  1. 什么是装饰者模式
    在面向对象的编程里,装饰者模式可以动态的添加behavior到object,而且不影响其他类。
    Core component (Macbook)
    Concrete Component (Macbook air)
    Decorator (Macbook decorator)
    Concrete Decorator(Macbook with touch bar)

  2. 好处
    处理类似的对象,复杂的结构。不至于子类过多

  3. 应用场景(Demo)
    https://github.com/SamStone92/DesignPatternsInSwift

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