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ColorAfter 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?"见他收获兵力，也替他感到高兴。年轻有为的画家路治平有一个幸福美满的家庭，妻子党美艳温柔贤惠，儿子路小军聪明伶俐。但这一切，被路治平的研究生――年轻美貌的梅雨歌所打破。在梅雨歌的热烈追求下，路治平的防线开始动摇……《长江往事》讲述的是民国初期，正值民族资本主义工业初步发展，本是官宦世家出身的向隐翁助其长子向不争白手起家创办向家船队并一举成功，其后向家三代子弟在历经数度天灾人祸中依旧溃而不散，用智慧与正义顽强守护向家长江航运公司屹立不倒的商战传奇故事。In the "Action" tab of the "Block Writing Palette", click "Flip Action" again, AutoCAD? The command window at the bottom prompts "Select Parameter" and clicks the text "Flip State 1" on the figure (that is, the vertical mirror axis); The command window then prompts "Select Object", clicks the long horizontal line above the triangle and the attribute (the attribute displays the word "elevation" at this time) and enters. The command window also prompts "Specify Action Position" and drags the mouse to the nearby blank space to click.本作讲述的是“幸福迷路的女子”鹿森海（而且是りうみ）想要变成最棒的自己的大逆转爱情故事。