This utility also inspects the individual keys and values within the file rather than having to dump the entire file and sort through the output.

此实用工具还检查文件内的个别键和值，而不必转储整个文件并对整个输出排序。

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However, this sort of task is so common that a special utility makes the job even faster. The command.

然而，这类任务非常常见，可以使用另一种特殊的实用工具，它能够更快速地完成这项任务。

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Utility APIs, such as sort, sum, mean, and so on, are commonly used within and throughout applications.

工具api，比如sort, sum, mean等，其使用一般贯穿于整个应用程序。

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