This is especially handy if the criteria change for handling various packages or if a new type of shipping becomes available.

如果处理各个包的条件发生更改或者使用新的送货类型时，则使用此模式尤为便利。

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SHIPPED item information (SHIPPEDORDER) : This table contains shipping ID, Customer ID, type of box ordered, number ordered, and date ordered.

发货信息(SHIPPEDORDER)：这个表包含发货id、客户ID、订购的箱子类型、订购的数量和订购的日期。

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This type of masked error can easily result in shipping broken code.

这种被蒙蔽的错误很容易导致不完善代码的发布。

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The analyst notes that in 2010, 45 of the top 50 online retailers offered some type of special between Thanksgiving and Cyber Monday, most of which were some type of shipping promotion.

FORBES: Holiday E-Shopping To Grow 15% In 2011, Forrester Says

"Say you had this spike in demand that limits your ability to deliver at this time, but that you can deliver by a date you know you can deliver by, and offer some type of inducement for their patience, like free shipping or an extra product feature, " he says.

WSJ: Can You Handle a Sudden Surge in Sales at Your Business?