Pattern matching is also useful for the design problem where you need to get at data inside an object, but only in special circumstances.

在你遇到需要从对象内部提取数据的设计问题时，模式匹配也有用，但是仅限一些特殊的情况。

youdao

Of course, you might prefer to have both phones get their data from the same back-end source, where you can edit names and Numbers in only one place.

毫无疑问，您肯定希望这两部电话从同一个后端数据源获取数据，这样您就只需在一个地方编辑姓名和电话号码。

youdao

Before I deal with all that middle bit — which I realize is where most of the fun lies — I'll show you how to get data into JAXP and how to get it back out.

在处理所有中间位(我意识到这是最有趣的地方)之前，将展示如何将数据输入到JAXP和如何将其输出返回。

youdao

Where should I go to get data to complete the picture?

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