beverage2;
beverage2 = new Mocha(beverage2)《head first 设计模式》这本书第97-98页是装饰者模式的说明示例,再依次计算Whip;
beverage2 = new Whip(beverage2).cost()这里会先计算DarkRoast的价格、Mocha和Mocha的价格呢,可否解释下为什么
Beverage beverage2 = new DarkRoast()?谢谢?为什么会有这样嵌套计算的逻辑;
beverage2 = new Mocha(beverage2)