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影片讲述了四位好姐妹一起去新奥尔良参加音乐节，姐妹们的热情被重新点燃后一起歌舞和疯狂的故事。This kind of situation will also occur among female journalists. Whether it is due to differences in news concepts or competition for positions, there will always be a phenomenon of mutual exclusion.Therefore, learning design patterns, The first thing to do is to understand which aspects of design patterns are available to developers, Then, the principle, timing and method of each design pattern are studied respectively, that is to say, under what circumstances should a certain design pattern be used? When understanding the timing of a certain design pattern, it is also necessary to understand what consequences will be caused if this design pattern is not used at this time. After understanding the principle and usage of each pattern, more importantly, learning the object-oriented thinking mode, after mastering the object-oriented thinking mode, looking back at the design pattern, you will have a deeper understanding. Finally, learning the design pattern, you must study hard and practice more. "I agree with the last sentence very much."如果我们近距离观察三个女人的人生重要时刻，会看到什么？人过三十，按理说应该更加成熟。但如果这时，你的生活支柱摇摇欲坠，会发生什么？ 《完美人生》讲述了玛丽亚、克里斯蒂娜和埃丝特这三个女人的故事。因为各自不同的理由，她们正陷入人生大危机。她们即将发现，生活不会和她们讲道理，计划也永远赶不上变化。1. State patterns define the relationship between state and behavior and encapsulate them in a class. By adding new state classes, it is easy to add new states and transitions