它可以告诉我们是否缺少值，或者是否存在生僻的值。

It can tell us whether or not values are missing or outlying.

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清单17 . conssl . cfg文件中缺少值。

Listing 17. Missing values in conssl.cfg file.

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使用普通的聚合初始化程序时，缺少的值会被认为它们已经被初始化程序指定为0来处理。

As with a normal aggregate initializer, missing values are treated as though they'd been given 0 as an initializer.

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