The multiple reading levels make this resource perfect for differentiated instruction.
阅读水平的多种资源为使这个完美的差异教学。
It also locks messages during processing, which ensures that a message will only be processed by one reader, even if multiple processes are reading from a single queue.
它还在处理期间锁定消息,确保一条消息仅由一个读取器处理,即使多个进程在从单一队列进行读取操作。
Because the typical read-access of a map changes the order, if multiple threads could be reading from the map, you should synchronize access.
因为映射表的典型的读存取操作会改变顺序,如果多个线程可以从映射表读取,就应该同步存取操作。
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