Because the entire body of the method is a single block, I can define and use local variables within the body without any problems.
因为整个方法是一个块,所以我可以毫无问题地在正文中定义并且使用局部变量。
In the example above I described a single-threaded process reading or writing a single random block on a disk.
在上面的例子中,我描述了一个单线程的进程读写磁盘的单个随机块的情况。
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