31DaysRefactoring读书笔记

8. 使用委派代替继承
11. 使用策略类

public class ClientCode
    {

        static IEnumerable<IShippingCalculation> shippingCalculations = new List<IShippingCalculation> { new AlaskShippingCalculation(), new NewYorkShippingCalculation(), new FloridaShippingCalculation() };
        public IShippingInfo ShippingInfo = new ShippingInfo(shippingCalculations);

        public decimal CalculateShipping()
        {
            return ShippingInfo.CalculateShippingAmount(State.Alaska);
        }
    }

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12. 分解依赖
31. 使用多态代替条件判断

《从针对接口编程到依赖注入》: 转载 @Robin's Blog 博文