·Minimizing the Work Inside Loops 尽可能减少在循环内部做的工作 ·Sentinel Values 哨兵值 ·Putting the Busiest Loop on the Inside 把最忙的循环放在最内层 ..
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If you didn't have the foresight to embed some kind of version information, or sentinel values, this could get tricky.
如果您没有想到要嵌入一些版本信息或标志值,这就需要一些技巧了。
In many specific cases, some of these fields may be set to sentinel values because they are not relevant to a particular operation.
在许多特定的案例中,这些字段中的一些被设置为sentinel值,因为它们没有与特定的操作相关。
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