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Command mode belongs to the behavior mode of an object. Command mode encapsulates a request or operation into an object, and separates the responsibility of issuing the command from the responsibility of executing the command through abstraction of the command. The implementation of command mode can provide the functions of revocation and recovery of commands. The specific structure diagram is shown below.Fig. 2 shows the damage when all entries are exactly the same as Fig. 1 and are at "right above" (if this is not called right above, the landlord does not know what is right above, because I can no longer adjust the angle, and I cannot aim at right above the head). The result is that the two are completely consistent.Chapter 4 Gold Standard到第三天，紧锣密鼓之下，小作坊已经产出了小两百只风铃，不算这两天的时间成本，收贝共花去了一钱五分，正正好好150文钱，0.15两，倒也是不疼不痒的投入。狄仁杰，唐代扶佐武则天进行朝政改革的一代名相。他居官清正，体察民情，除恶扶善，断案如神。出任太原大理寺丞期间，侦破疑案无数，名扬海内，流芳千秋。狄仁杰断案传奇第一部以《御珠案》、《紫光寺》、《朝云观》、《铁钉案》、《红阁子》、《汉家营》六个离奇曲折、引人入胜的故事组成，展示了盛唐时期丰富多彩的粹生活图景，刻画了比西方福尔摩斯早一千年的唐代名相狄仁杰利用逻辑揄进行勘案的聪明才智和历史绩业。P. Interactive ()We use the global publish-subscribe object encapsulated above to realize the communication problem between the two modules. For example, there is now a page with a button. After clicking this button each time, the DIV will display the total number of clicks on this button. The following code: