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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?""We tied nails and belts to make wooden rafts. The rafts were tied into the water. I was tidying up the liferafts. Chief mate Fu Yizhong got on the rafts. He waved to me while laughing and said, 'Don't make any noise, you come up.' He said several times, but I said I didn't finish it. Wait a minute. At that time, there were three more on the raft besides the first mate. Song Guochun, Gong Xuejun and Ding Yumin all put on life jackets.幽皇伊祁渊，幽族有史以来最强的皇帝，传说，他是残忍嗜血弑父弑兄的疯皇！可怜的现代女孩苏离离，一穿越过来，就成了幽皇的替嫁新娘。 为了在幽皇手里活下来，苏离离想尽一切办法，疯狂给幽皇吹彩虹屁，没想到幽皇还有点小心动。为了查清苏离离到底有什么阴谋，幽皇借着阴差阳错变小的少年身份，悄悄接近苏离离，谁知，苏离离竟要拉着少年跑路！ 两人不知道的是，他们的“孽缘”本应在数百年前就结束了，然而，命运的齿轮却再次重启，这一世，他们会迎来怎样的结局？"Later things became more serious, The Vietnamese army attacked more than seven or eight times in a row. But it was almost halfway through the fire of the artillery group. Occasionally, sporadic ones escaped gunfire, Can't hide from our accurate shooting, Because the explosive power of the shells is very large, Apart from being killed by shrapnel at a long distance, It is normal for those who are closer to me to be blown to death without a whole body. At that time, because of the open terrain on our side, So the superior is more 'generous', In order to better understand the enemy situation and give full play to the terrain advantage of position 142, All the front-line officers and soldiers in our squad leader and above positions are equipped with binoculars, which is absolutely not treated in other positions. If other positions want to have their own binoculars, they have to be a deputy platoon leader. As a squad leader like me, I am still very proud to be able to observe the enemy's situation with binoculars.竟还不打算说，弄得几人心痒痒的。…,花园的气氛有了尴尬，尹旭两首菊花诗带给众人太多震撼，以至于众人都忘记了该干什么？或许是女人天性细腻，感知敏锐的缘故，身为女主人的吕雉首先发现这一点，立即出言打破僵局，笑道：尹将军的妙句实在精彩，美酒佩英雄，都进屋边饮边谈如何？众人都如释重负，在刘邦和吕雉的引导下厅堂走去，一路上尹旭暗责：以后再不能闹着这种事，免得给自己找这么多麻烦。　　有主见、成绩又好的女大学生洪雪不知道为什么老是觉得同系的人气学长刘正是一个不能信任的人，但是正因为刘正的好心相助，洪雪才得以继续坚持自己的学业。虽然觉得刘正有些奇怪，但两人最终稀里糊涂地交往了。尽管如此，交往后的刘正还是不会轻易吐露自己的内心。