Since it returns an array of config objects, you should always check the length of the returned array.

由于它返回一个配置对象数组，因此您总是要检查返回的数组的长度。

youdao

Then check if the line count exceeds the page length.

然后检查行的总数是否超过页长。

youdao

The strnlen_user function takes two arguments: the user space buffer address and the maximum length to check.

strnlen_user函数带有两个参数：用户空间缓冲区地址和要检查的最大长度。

youdao

First, I'm going to do a sanity check strlen so we've used string length, strlen, before.

首先，我先做一个检查,我们以前使用过字符串长度函数。

哈佛公开课 - 计算机科学课程节选

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