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省得他们坐等捡便宜，咱们每天白白耗费军粮。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?"2 Activities related to the JIT production model子婴从小受到父亲影响，加上邓陵墨潜移默化的影响，其仁爱之念比父亲扶苏过犹而不及。　　比任何人都对乒乓球更加真心的明星们，为了乒乓球的复兴和大众化而聚集。他们将生动地展现充满紧张感的拉力赛，为观众们带来让人捏一把汗的乐趣。不仅如此，通过与国家代表教练的训练、竞争对手匹配等，激烈地成长的面貌将更加增添愉快感。最好笑的是，苞谷才喝了一碗蛋羹、吃了几块豆腐，在等饭的当儿，居然靠在椅子上睡着了，哈喇子流老长。