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1. There are two options to manage the creation and destruction of state objects. The first is to create and then destroy state objects only when they are needed, and the other is to create all state objects from the beginning and never destroy them. If the state object is relatively large, the first method can be used to save memory, which can avoid creating some objects that will not be used and recycle them in time. However, if the state changes frequently, it is best to create all these state objects in the first place, and there is no need to destroy them, because they may be used again soon.In this blog, from theory to practice, the system introduces iptables. If you want to know iptables from scratch, you can check the list of iptables articles, and the direct link is as follows.一次意外触发传送仪器，A时空的林晓希被传到了B时空，高冷博士周予恒为隐藏A时空林晓希的身份，为她出谋划策，A时空的林晓希一改往日软弱作风强势逆袭，正当A时空的林晓希和周予恒两人感情升温时，A时空的林晓希却即将消失在B时空。结束10年知己关系，成为公开情侣的6个月，但因为一瞬间的失误 开始了秘密恋爱？展现19岁高中生们的搞笑真实恋爱故事。在南极洲的北极星六号国际基地，讲述科研工作者们的“极端的生存悬疑”故事：南极洲长达半年的漫长冬天来临，极夜中，有10个科研人员留守在基地，中途与外界断了联系。而此后，当外界的科研人员返回基地，迎接他们的是灾难性的景象：留守10人中已有多人死去，1人失踪，两人幸存。黑暗、冰封、与世隔绝的基地中，到底发生了什么？　　把那颗白玉夜12. Create conditions, enrich books, newspapers and magazines, and introduce incentives to encourage employees to study spontaneously, improve their quality or provide benefits for outstanding personnel to go out to study, train and grow.