我有以下场景,我有不同种类的销售算法来计算销售价格。FixedSaleStrategy 不需要 basePrice 参数,而所有其他策略实现都需要它。有没有避免这种冗余参数的好方法?
public abstract class SalesStrategy
{
public abstract double GetPrice(double basePrice, double saleAmount);
}
public class AmountOffSale : SalesStrategy
{
public override double GetPrice(double basePrice, double salesAmount)
{
return basePrice - salesAmount;
}
}
public class FixedPriceSale : SalesStrategy
{
public override double GetPrice(double basePrice, double salesAmount)
{
return salesAmount;
}
}