当然，没必要把每个用例都跑一遍来确保代码工作正常。

Certainly it is not necessary to run every example to be sure that the code works.

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但是，在安装数据库以后，您需要完成以下三件事情才能使此代码工作。

However your database is set up, you need to do three things to get this code to work.

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Linux设备驱动程序，是通过专门与硬件打交道的内核代码工作的。

Linux device drivers work through special kernel code that directly accesses the hardware.

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In general, good programming style says you put in comments that are going to be valuable in helping you as a reader understand what's going on inside of the code.

通常来说，优秀的编码风格意味着,你要放进去的注释,在帮助代码阅读者,理解代码内部,是怎么工作的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Important lesson, so that there would be some predictability in the results and I would have some, if you will, smoke test for knowing whether or not I was getting, my code seemed to be working.

这很重要，因为这样我就可以预测,结果会是多少了，如果你愿意，我们可以做烟气试验,来看我的代码是否工作正常。

麻省理工公开课 - 计算机科学及编程导论课程节选