book: avoid implication that volatile
may be usable in concurrency
#281
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resolve #278
Description
Remove potentially misleading implication that
volatile
may be usable in concurrency.Change List
volatile
and concurrencyReference
说明
移除可能有误导的对于
volatile
可用于并发的暗示。另外在中文版示例中也加上了和英文版一样的volatile
修饰,表示此处使用volatile
没有意义。变化箱单
volatile
与并发的描述性错误参考文献