选择跳水板的自定义长度。

Enter the custom length of the diving board.

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该函数接受一个指向用户空间缓冲区的指针、一个指向内存缓冲区的指针、以及一个以字节定义的长度。

This function accepts a pointer to a user space buffer, a pointer to a kernel buffer, and a length defined in bytes.

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同样，这个特性可以显著减少类定义的长度，并使您的应用程序代码更容易维护和读取。

This feature can, again, significantly reduce the length of your class definitions and make your application code simpler to maintain and easier to read.

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