The principle of opening and closing means opening to expansion and closing to modification. When the program needs to be expanded, the original code cannot be modified, but the original code should be expanded to achieve a hot plug effect. Therefore, a summary of one sentence is: in order to make the program scalable, easy to maintain and upgrade. To achieve this effect, we need to use interfaces and abstract classes, etc. We will mention this point in the later specific design.
影片讲述了一个追求梦想的少年小宁在现实与梦想还有爱情三者之间不断挣扎与徘徊，与社会不断进行抗争的故事。故事的主人公小宁是一个满怀梦想的歌手，在高中时代他与几位要好的朋友组成了罗曼蒂克天团进行追梦，毕业后天团名存实亡，只有小宁依旧在为了梦想努力着，不断的与现实抗争。一次偶然的机会，小宁邂逅了著名艺人安娜的助理唐雨晴，两人的热恋让小宁感受到了爱的甜蜜，并且在雨晴的帮助下小宁一步步离自己的梦想越来越近，但是与此同时，小宁却是离爱情越来越远了。
She said that she could stay in the mountains for a few years without going out, just to do it well. It would be even better if the craft could be revived and passed on. After living in the city for many years, she has returned to her hometown, lived in seclusion in the mountains, and returned to the original ecological rural life. If it weren't for her heartfelt love, many people would not have been able to do this. This is also the biggest touch to us.
However, super pilots need to fly safely for at least 1480 hours and have the capability of non-multi-weather conditions and multi-aircraft.
急急道：肯定会再见的。
Lins' eldest son 04
In the previous example of electric lights, a state mode program was completed. First, the Light class is defined, which is also called Context here. Then in Light's constructor, to create instance objects for each state class, Context will hold references to these state objects in order to delegate the request to the state objects. The user's request, that is, the action of clicking button, is also implemented in Context, with the following code:
只是陈启老神自在，一副打死我也不剧透的表情。
Return data
江湖中有一神秘杀手组织，沈冲是其中最优秀的杀手，但长期以来，他厌倦了杀手的生活，投造南宫世家老爷子。北方崛起的神秘组织飞鹰堡为了争夺武林秘笈—莲花宝典，与南宫世家形成了争霸局面。白玉川也为夺得此秘笈，一面与飞鹰堡勾结，一面又附和老爷子。沈冲深得老爷子信任，被派遣暗中调查黑白，在一次刺杀行动中邂逅了奇女子南宫蝶。小蝶目睹江湖恩怨几次自杀，又几次被沈冲救回，两人情深意重，生死缠绵。本片通过……
趁着日头凉干了好收起来。
兰德尔·雷恩斯（尼古拉斯·凯奇饰）一个人称“孟菲斯”的窃车大盗的传奇故事。孟菲斯是个窃车高手，世界上再奇特的车锁，再灵敏的警报系统只要到了他的手里也只是件小摆设。你不信？把车停在这试试，孟菲斯一到，六十秒之内，它就会不翼而飞。多年以来他还从未失过手，法律也没法制裁他。不过他决心金盘洗手，停止这项“工作”，过正常人的生活。然而不久他的小弟弟却试图步其后尘，当他卷入一桩危险交易时，孟莫斯不得不重操一次旧业，他为了挽救小兄弟的生命，答应在一个晚上盗窃50辆汽车。而此时，警察又跟上了他。
本剧由《黑客帝国》系列和《云图》导演沃卓斯基姐妹与《巴比伦5号》编剧、著名制作人J·迈克尔·斯特拉辛斯基共同监制此剧，讲述来自不同城市的八位陌生人，不同身份，不同取向，因为某个神秘事件实现通感，不仅共享情感和思想，还能共享语言和技能。一方面，有个神秘人想将这八个人聚集在 一起；另一方面，一个神秘组织又使尽一切手段猎杀他们。他们必须齐心协力，杀出一条生路，找寻超感真相。
一起畅想未来
李民哲（李秉宪饰）是贝克利音乐大学毕业的精英，在父亲李成春所属的唱片公司VICTORY担任唱片监制，性格冷酷。李善在（柳时元饰）李成春的次子，就读于医科大学，爱好音乐，天性柔顺、善良。金延秀（崔智友饰）从小在孤儿院长大和金世娜（李贞贤饰）是情同手足的姐妹。后来延秀去了汉城，在VICTORY唱片行打工，但她一直抱着想要成为画家的梦想。在工作中，延秀对唱片监制民哲产生了好感。民哲让延秀住进了他家，成为了他妹妹李敏芝（申敏儿饰）的美术教师，而在路上偶遇延秀的李家次子善在对她一见钟情。世娜为了寻找延秀也去了汉城，并成为了VICTORY唱片公司的新进歌手，她对在孤儿院结识的善在抱有好感。善在渐渐发觉李成春不是自己的亲生父亲，而是自己的杀父仇人。当年母亲为了温饱而改嫁了民哲的父亲李成春。而民哲也因此痛恨善在和他的母亲夺去了原属于他和妹妹的父爱。由于延秀的出现使得民哲冷酷的心开始解冻，但他不能忍受善在对延秀的爱情，兄弟两人处处针锋相对。面对民哲的爱和诱惑，延秀渐渐被他所吸引，而善在的温柔痴情，却使她不
阮清恬到底还是遭不明身份的人绑架，任浩铭为了阮清恬的安全，开始全天候“监视”阮清恬，而脾气倔强的阮清恬无法忍受这一切，频频与任浩铭发生冲突……然而就在这些冲突中，两人的心越走越近……可是从国外归来的任浩铭姐姐任青青误会了阮清恬的身份，百般阻挠任浩铭与阮清恬恋爱。任浩铭对阮清恬不离不弃，两人好容易冲破了任青青的阻碍，此时任浩铭的旧识曼宁又出现……可是曼宁早已离世，这个曼宁的出现难道是有人故意策划的阴谋？又是谁策划的阴谋呢？
This is mainly due to the change of automation. All industries have a broad technical base, from entry-level hardware support to advanced corporate development. If you don't consider the technical level, there is no way to formulate a business strategy for the company, so information technology has participated in the development strategy and is extremely effective in designing and guiding business objectives.
