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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."赵宝儿剧中饰演债务人家的大女儿，生活能力强的空姐独汝周一角。We ran counter to each other and ended up in the same way.Return parent;　　大王世宗金成根导演执导，《青春记录》《爱情的温度》《Doctors》河明熙编剧执笔，接档《绅士和小姐》播出。对一些人来说,西方是一机遇和冒险的目的地。对另一些人来说,这是危险的核心和绝望。雇用当ex-lawman普雷斯顿比格斯护送一群妇女遭受草原发烧回到文明,他们遇到了一个杀手团伙意图阻止他们。看似不可能的旅程之前,该组织发现最后一个希望当他们加入了一个美丽的女人的火力,将匹配任何。他既然在皇帝面前说了这个事，当然要送些鱼给他了。