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刘亚仁将主演犯罪惊悚片[无声](소리도 없이，暂译)。影片由新人导演洪义正自编自导，描绘了两名男子离开犯罪组织后的生活突遭变故。该片预计7月正式开机。这也是刘亚仁继[燃烧]和[国家破产之日]后接演的首部影片。　　蒙特利尔警方对这个杀人狂魔简直束手无策，于是他们邀请美国的国际刑警前来帮忙，神秘的作案手法吸引了丽娜·斯科特的注这是真的都是杀手啊。D. Invoke (str);Visitor mode is to encapsulate some operations applied to a certain data structure. Once these operations need to be modified, the data structure that accepts this operation can be saved unchanged. Visitor mode is suitable for systems with relatively stable data structures. It reduces the coupling degree between data structures and operations acting on data structures, making the set of operations relatively free to change. The specific structure diagram is as follows:The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.3.2. 1 The MySQL event scheduler event_scheduler is responsible for invoking events and is turned off by default. This scheduler constantly monitors whether an event is to be called. To create an event, the scheduler must be turned on.