For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.
"This' knowledge 'is out of ammunition, Before, we used ordinary bullets to hit these big wasps. So the killing efficiency is not high, After hitting them with '74 jets', We found that they were very afraid of fire. So he took out all the tracer armour-piercing bombs that were pressed at the bottom of the box. These bullets have three more functions than ordinary bullets: luminous, armor piercing and burning. This kind of bullet is mainly to use the tracer function to provide target indication for friendly fire. It works best at night, Then there is the use of this kind of ammunition to collect fire and shoot at the ammunition and fuel accumulation areas of the Vietnamese army. Because they can wear armour, So it can break through some relatively hard shells, Like car doors, Oil drum skins and so on, Then blow off inflammable and explosive substances such as ammunition and gasoline, In order to destroy the enemy's military materials, Because the above assumption was that the Vietnamese army might fight with our army in positional warfare, It is the kind of positional warfare in which the two sides fight each other. That's why so many of these munitions are being distributed, But this is not the case, The Vietnamese army did not have the patience to build positions to fight our army. But directly launched the attack, The envisioned positional warfare turned into defensive warfare, That's it, In the battle before position 149, there was basically no place where the three functions I mentioned above could be used. In this way, those traced armour-piercing firebombs are basically useless. In order not to let them get in the way, they were piled up at the bottom of all the ammunition. At that time, they were taken out at the right time. We used the battle gap to replace all the ordinary bullets with traced armour-piercing firebombs to hit the second batch of big wasps. The effect was not good.
去港市武警支队协助深圳警方调查一个文物走私案，在一次行动中扑了空，队长袁可为觉得此案另有蹊跷。市局宣传处警员周马为调动到刑警队的事找到袁可为，却得知其女友刑警队重案队警员冯薇已经很多天没有上班了，周马找到冯薇，得知她想要辞职去上海做生意。周马正式调到刑警队任职，被派遣到刑警犯罪心理学研究室，一心想搞刑侦的周马百般不快，但随即他得知犯罪心理学研究室的刘宝生在参与一个敲诈案的侦破，一名敲诈犯在对本市最……
人见人爱的聪明女白领本来有个稳定的男朋友，谁知就在庆祝升职的当晚……什么？竟然有个和我长得一模一样的女孩！她还救了我！……我为了感谢女孩给了自己的名片……谁知“双面名媛”出现了……
捍卫正义，惩治邪恶是律师的神圣使命，而千篇一律、循规蹈矩地查证、起诉，如何斗得过奸诈有钱、有金牌辩护律师护身的大鳄鱼？锲而不舍 追寻真相义不容辞 为民伸冤法律--象征公平、公义。但当法律存着漏洞，无辜的人如何沉冤得雪呢？不修边幅、富正义感的律师黎志鹏（欧锦棠）为替恩师杨佐铭（姜大卫）洗脱罪名，千方百计找寻真正凶手--大商家阮利来（黄允材）的罪证。期间，鹏为了暗恋对象阮方瑜（江美仪），放弃女友何子菁（蔡晓仪）。可惜瑜却与他的好友唐晶（尹天照）相爱，鹏大受打击，往平民区替低下层市民打官司。另边厢，瑜揭发晶之弟唐森（甄志强）监守自盗，森入狱，并暗中部署对晶、瑜的报复行动。究竟晶、瑜能否逃过大难呢？而鹏又能否把来绳之以法呢？
Stance, my recent favorite, Because I have been wearing sneakers, Therefore, I prefer to buy all kinds of good-looking socks. Some time ago, I found that this sock brand is completely like opening up a new world. There are too many kinds and colors, and there are too many good-looking socks. These are some of the ones I have collected. I wear the L size of Kids just right. This helps save money. There are also L sizes. Obviously, it will be large but I also want to buy them back, because I like the pattern, alas.
这些人正是越国飞影的探子，刘邦出兵彭城之后，项羽的一举一动就在尹旭的关注之中。
以黑川翔子的报导文学改编,在一所被称为底层学校的县立高中,一年内多达相当一个班的40名学生辍学,教师们努力解决现代社会两极化下中学生面临的各种问题,描述基于一个关于新老师的冲突和成长的真实故事。
青蒜拐了绿菠一下，对她眨眨眼，小声道：是菠菜。
The enhanced module pattern is used when it is suitable for those situations where the single column must be an instance of some type and some attributes or methods must be added to enhance it. For example, the following code:
这是张家故意放消息给他，以打草惊蛇。
小戏院中没有冷气，汗味、喧杂声让人觉得要窒息，虽然团主阿俊卖力的想把场子炒热，虽然喇叭手李明辉卖力的吹着喇叭，虽然正是花样年华的歌舞团台柱秋玉、秋美卖力的在台上跳着优雅的舞、唱着一首‘我最爱的人’的歌曲，然而鼓噪的观众们要的更多，他们要的不是优雅，他们要的是‘清凉秀’，而这也是团主阿俊在看到票房奇惨之下，暗暗下的一帖猛药，虽然拉抬了今日超人气的票房，然而人们要兑现，虽然阿俊尽力拖延，但是观众已不耐的向台上丢瓜子壳、果皮屑了……
There is another example of students deliberately practicing learning English. Although the methods are different, the results are indeed extremely good.
When the factory is a function, it represents the construction method of the module, and the interface provided by the module can be obtained by executing the construction method.
Direct attack
也不知从何处传来小娃儿的嬉闹声，听得他一愣：这院子外面他还没出去过哩，是啥样的哩？有没有果子树？他们是不是爬到树上摘果子高兴地笑？顿时，小娃儿目光就迷蒙起来，仿佛看见一大片桃林，树上好些带麻点的桃儿。
我看见了它，还没端弓，它就溜得没影了。
就这么坐着干各自的事。
