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For the advantages we mentioned, the second point is that we can understand the virtual agent below. The virtual agent is used to control access to the ontology with high creation cost. It will postpone the instantiation of the ontology until a method is called. For example, if the instantiation of an object is very slow now, it cannot be completed immediately when the web page is loaded. We can create a virtual agent for it and let it postpone the instance of the object until it is needed.The execution results are consistent with the previous code, but the benefits of using the state mode are obvious. It can localize the relationship between each state and its corresponding behaviors, which are scattered and encapsulated in their corresponding state classes, making it easy to read and manage the code. In addition, the switching between states is distributed within the state class, which makes it unnecessary to write too many if, else conditional branch languages to control the switching between states.On the left are fake socks and on the right are real socks.本剧以神奈川·横滨为舞台，刻画了原体育教师刑警·仲井户豪太与头脑粗糙的精英检察官·真岛修平组成搭档，挑战难案并大闹一场的原创电视剧。Please don't swallow it again游戏公司开发的暴力杀人游戏上线后不久，有部分玩家都争相登陆，想第一时间过瘾一把，但是随着游戏的运营和展开，爆出有部分玩家出现了冷漠，精神萎靡，甚至发生了几起谋杀事件，但是究竟什么原因而造成了杀人事件呢，黑客联盟开始进行病毒攻击了解真相，结果遭到游戏公司杀毒软件的拦截病毒被杀，而黑客也遭到了被游戏控制大脑的玩家的追杀，为了能拯救被游戏控制的玩家，黑客小玉进入到了游戏之中，而同时小玉得知博士已经被害，为了能早日寻找到博士被害的元凶，小玉进入游戏后独自作战，开始了一段奇妙的游戏之旅。0 takes the form of a delegate variable (parameter list), allowing the event to execute the method