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.
籌備一年的電視劇《鑑識英雄II正義之戰》將在2016年5月下旬開拍。《鑑識英雄II正義之戰》除了著重第1季的特色以鑑識科學偵辦刑案，同時加重在辦案過程中追捕嫌犯的武打場面，并将和鑑識專家、知名法醫、檢察署、消防局等机构加强合作。
看《唐伯虎点秋香》怎么可能不笑，或者只笑不出声？这是一件不可能的事。
In addition, it still has doubts about the online learning content and learning effect of thinking ability training, and because it is directly facing the national market, the accuracy of obtaining customers is relatively low.
In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.
Let's say three people are A B C
香港公营医疗开支年复一年、几何级数式膨涨，宛如一颗随时爆破的计时炸弹。明成北医院是公营医院龙头，副院长杨逸滔（郭晋安饰）决意推行医改，为制度进行一场“大手术”。院内的天才医生唐明（马国明饰）质疑他的计划，恐怕医改实行，会导致有人因为无法支付医疗费用而死亡。二人理念不同，爆发连场冲突，但同样秉持着一颗拯救生命的仁医之心，并联合一群医护精英，守护明成北每一位病人，谱出一段段动人的仁心仁术故事。
旁边一位学者指着面前这台机械的其余零件道：齿轮也坏了。
春江市中级人民法院刑事审判大法庭开庭，涉嫌贪污受贿的被告人、原市财政局局长周士杰正在做法庭陈述。春江市中级人民法院副院长杨铁如坐在审判长的席位上。法庭气氛庄严肃穆。正当杨铁如拿起判决书，开始宣读时，大法庭突然传来一个女子声嘶力竭的呼喊：“不！”她就是周士杰的妻子邵红。杨铁如和法官林子涵到看守所给周士杰送达刑事判决书。囚犯吴西江突然地嚎唱起来。从杨铁如那里，林子涵了解到，吴西江因故意杀人罪在十八个月以前被判处死刑，高院正在审理他的上诉。林子涵去逛挚友赵清华的服装店，接到消息，周士杰自杀。林子涵匆匆赶到医院，杨铁如告诉她周已脱险。杨铁如回到家，妻子刘早春在等他。夫妻之间爆发了一场争吵。处于颓唐疲惫中的杨铁如接到市委书记孙志的电话，询问周士杰的情况。法院党组副书记张业铭告诉杨铁如，市委组织部要到中院考察干部。林子涵则向杨铁如转达了周士杰提出的三个条件。杨铁如表示同意并让林子涵去看看周士杰的妻子。林子涵和书记员聂小倩来到周士杰家，邵红精神恍惚、自顾自地唱着京剧。
Jack Reacher在小说中曾经是美国陆军的军警，离开美军后他以调查员身份接手调查一些可疑或有危险性的案件。
在茫茫宇宙的某个世界“魔法仙境”里，善良和邪恶势力进行斗争，在这个奇幻世界中，存在仙灵、女巫、小精灵、一般人类以及许多其它各式各样的种族或专业。仙子们平时住在艾菲城学院内相处、学习，处理恋爱上的问题，还要在各种邪恶势力造成威胁的时候挺身奋战。
The puppy was killed and abandoned in a corner of the yard.
神秘机构出现在平凡的社恐女孩“池小鱼”手机APP里，下单点人设就像叫外卖一样轻松！池小鱼为了完成工作使用人设外卖，却意外向霸道总裁发起了攻势，且频频得手，引得霸总堕入情网！就在池小鱼准备告别母胎单身之时，霸总苏扬的人生赢家人设竟然崩塌了！
Perhaps there is the possibility that 1270 will not break away and rebound, However, it does not rule out the possibility of a second break after the rebound confirms the pressure. This can be referred to before 1280 stabilized and pulled up, After that, the withdrawal confirmed that the support gradually hit a low of 1324.5. Moreover, gold fluctuated for too long in the wide range of 1280-1325 for a week, and once again saw a downward break last year, the short position would not end in the short term. Otherwise, the break would have no meaning and would return to the wide range of shocks. Moreover, the benchmarks in the new technology are still in short positions. Therefore, the rebound of gold confirms that the pressure of a second downward break is less likely!
Believe in the danger of natural talent//292
香港女特警优秀份子赵丽冰被挑选到汉城参加特别训练，在训练过程中，冰认识李子萍与金玉琪，张教官对三人特别严格；毕业典礼过後冰与琪萍道别，由程正德送到机场返香港，各自忙著自己的工作岗位。冰在香港破获了一宗伪钞案件，其中一名犯人愿意作为污点证人，说出幕後主脑身在韩国。冰被批准与国际刑警一同押解污点证人到汉城与当地警方合作。警局内冰琪萍三人翻阅在集团基地取得的档案，发现电脑磁碟入有程正德的活动及支出记录。琪的上司透露琪父亲是警方的卧底，因手上已得到伪钞集团伪钞电版作为证据，而导致被杀；琪向上司示出母亲死前留下的刺花绘图，各人认定程正德是凶手及伪钞集团幕後一份子，立即命令封锁离境关口及拘捕程正德；琪认定程正德是杀父凶手，琪立志要亲手将程拘捕归案。
