Replace Temp with Query

double GetPrice()

{

    int basePrice = _quantity * _itemPrice;

    double discountFactor;

    if (basePrice > 1000)

    {

        discountFactor = 0.95;

    }

    else

    {

        discountFactor = 0.98;

    }

    return basePrice * discountFactor;

}

 

double GetPrice()

{

    return BasePrice() * DiscountFactor();

}



int BasePrice()

{

    return _quantity * _itemPrice;

}



double DiscountFactor()

{

    if (BasePrice() > 1000)

    {

        return 0.95;

    }

    else

    {

        return 0.98;

    }

}

 

参考：http://sourcemaking.com/refactoring/replace-temp-with-query