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(2) Under the multi-core system, the resources of multi-core CPU can be fully utilized. That is, when I/O blocks the system but the CPU is idle, CPU resources can be used with multithreading.关于一位东北民间萨满巫师的纪录片From the above command class code, we can see that any operation has an execute method to perform the operation. The above code uses traditional object-oriented programming to implement the command mode. The procedural request call of the command mode is encapsulated in the execute method of the command object. Have we found the above writing code a little cumbersome? We can do this using the callback functions in javascript, In object-oriented, The receiver of the command mode is saved as an attribute of the command object, and the command execution operation is agreed to call the command.execute method. However, if we use the callback function, then the receiver is closed in the environment where the callback function is generated, and the execution operation will be simpler. Only the callback function can be executed. Let's look at the following code:不必担心。若是死了，你是不是要说我‘罪有应得？他想着秦淼刚才的模样，都是为了郑葫芦，若是自己死了，她怕是一滴眼泪也不会掉吧？会不会拍手相庆，说世上少了一个祸害？这个想法如同毒蛇一样啃啮着他的心，令他胸口剧痛，双目迅速充血涨红。这样小人，赢了他也没意思，白惹他惦记新移民犯罪日增，港警商借大陆三名公安偷渡入港，企图将犯罪集团一网打尽。李向东、戚京生和郭学军暗中受程总警司节制，线人大大和三人合作久了，便产生感情。他们屡次破案，惜杀人太多，引起注意，程警司更阳奉阴违。