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新闻直播5分钟前，电视台知名主播世拉（千禹熙饰）接到一名女子的电话，对方表示自己将被杀害。世拉认为这只是通恶作剧电话，但内心又感到十分不安，而世拉的母亲素贞（李慧英饰）则认为，这是个能让世拉成为真正主播的好机会，让世拉决定前往对方的家，没想到却发现女子和其女儿陈尸在家中。此后，世拉眼前不断浮现那名女子死去的模样，并再次见到曾出现在案发现场的精神科医生仁浩（申河均饰），对于曾是死者主治医生的仁浩，世拉对他的疑心愈来愈重……故事里，女主名叫洛枳，十几年来，她在自己的世界里演着这场暗恋的独角戏，对男主盛淮南感情复杂，既因他的优秀而被吸引，又因过去双方家庭一些原因而渴望超越他。讲述天上财神欧阳震华坚持金钱在凡间是万能，更与相信“情比金坚”的寿星公打赌，要改变凡人杨西。As the name implies, iterator pattern is to access objects in an aggregation sequentially. Generally speaking, it is very common in collections. If you are familiar with collection classes, it will be very easy to understand this pattern. This sentence contains two meanings: one is the object that needs to be traversed, that is, the aggregated object, and the other is the iterator object, which is used to traverse the aggregated object. Let's look at the diagram:After understanding the history and classification of design patterns, how should we learn design patterns? Before learning the design pattern, readers must establish a kind of consciousness, that is, the design pattern is not only a method and technology, but also an idea and a methodology. It has nothing to do with the specific language. The main purpose of learning design patterns is to establish object-oriented ideas, program to the interface as much as possible, with low coupling and high cohesion, so that the programs you design can be reused as much as possible. "Specious. Learning design patterns can better understand object-oriented ideas. Design patterns are some design skills and tricks. Don't rise to ideas and methodologies, okay?"Disadvantages: There are a little more node objects in the responsibility chain mode. It is possible that most nodes do not play a substantial role in a certain request process. Their role is only to make上古时代，为了应对大旱，中国古老的两个部落东夷和九黎