? Singleton pattern is the most common and simplest design pattern in design pattern, which ensures that only one instance exists in the program and can be accessed globally. For example, account information object management used in actual APP development? Objects (SQLiteOpenHelper) and so on all use singleton mode. This model has several advantages:
就是《易经》和《道德经》了，为的是修身养性。
好想看一看秦始皇当年是如何征战三界。
中学教师常宝童，家教严厉，他的两个孩子，长子常天赐，次女常佳慧，也都是他的学生，妻子小陶，是一位贤妻良母。这一家人本来看起来又和谐又幸福，这一年高考，两个孩子命运转折，发榜那天，天赐第二次落榜，佳慧如愿以偿考上了常宝童替她选的重点大学。宝童也没料到后面的事情会如此麻烦，他一边要监督着总是不争气的天赐重新复读，一边要盯着脱离他管制的校花女儿佳慧，防止她在外面胡来，忙的焦头烂额，可是青年终于成人，他们对自己的人生都有了自己的规划，对于宝童这种封建家长式的管理，终于反抗起来，一场接一场的家庭战争之后，这个家里每个人，都感到自己受到了伤害，而那份由亲情血缘连接起来的爱，却无法斩断。他们番然醒悟，父母终于学会了宽容和理解，孩子们也理解了长辈的苦心，开始用自己的力量去认真面对人生的难题 。
郑氏低喝道：糊涂。
王离爵封武城侯。
黄胖子的生意虽在府城，但很多时候也少不了何永强的帮忙，一般人搞不定的事，一般人见不到的人，何永强一发话，一引荐，通通好办，包括他现在最大的财路，也正是拜何永强所赐。
Because of the hot weather in Vietnam, So during the war, whether we or the Vietnamese army, All rolled up their sleeves, So I don't even have to cover my clothes. The liquid splashed up and the skin "paste" a full, I watched his whole little arm start blistering, At first glance, the bubble looked like a blister with worn feet. But much bigger than blisters, And from rising to rapidly expanding to exploding, In just a few seconds, However, there will be new blisters on the location of the fried blisters, layer by layer, without interruption at all. It looks like an object is rotting at a high speed visible to the naked eye. Well-this description is not very accurate. Let's put it this way, have you ever seen what it is like to slowly pour cold water on quicklime blocks? It is the way quicklime blocks expand and fall off layer by layer and piece by piece after contacting cold water. Just like that, It's just that it's not falling off, it's not a piece, It's a big blister, Each blister, Jiang Yong's forearm collapsed one layer down, Not that we are timid, But the scene was so scary, I went to "three dozen and three defenses" (note: "Three strikes and three defenses" is a proposal put forward by our country to the entire army and the whole people during the Cold War. In order to prepare for a big fight and an early fight against the Third World War, Military learning subjects of strategic significance, specifically, the "three dozen" are planes, tanks and airborne, and the "three defenses" are: anti-atomic "nuclear weapons", anti-chemical and anti-biological weapons). I have seen the skin erosion caused by mustard gas attack in the video during the class hours, but compared with this, it is simply pediatrics.
包括徐老七在内，都或多或少地做过这些事情，所以徐彤这么一说，所有人的表情似乎都有些不大自然了。
该剧讲述了即将面临退休危机的中年男子,一夜之间,拥有就像麝香猫能使咖啡产生特殊香气的奇妙故事。
自塔利班统治后，Mosheen与他的妻子Zunaira的幸福生活便不复存在。Mosheen想成为外交官的梦想幻灭，Zunaira不戴面纱甚至不能再与Mosheen一起出现在喀布尔的街上。Atiq是死囚监狱的狱卒。Atiq的妻子Musarrat患有不治之症。然而，这四个人的生命却随着死亡、监禁、热诚和伟大的自我牺牲而莫名地交织在一起。
I remember the fighting was fierce, Almost everyone's barrel was red, But that's it, There is still a "slip through the net" in these things, Towards the end of the third exchange of fire, And one came up from the right side of the position, I turned around and shot it, After pulling the trigger, One shot hit him in one of his hind legs, I watched helplessly as the impact of the bullet knocked its hind legs off its body. But it doesn't seem to care, It is still a leap forward, He threw himself on a soldier named Zhou Xiaolin beside me. Biting his thigh and not letting go, Ge Xiaolin's painful "wah-wah" yelling, I think we've just had an attack, A little respite, He asked two people to help him get this thing off his leg with me. As a result, I was busy for nearly 5 minutes, Break this thing up with a dagger, But it did not let go, Finally, I used a faster knife. It's only by opening its mouth from the outside to the inside that it's allowed to let go. But Zhou Xiaolin is still relatively unfortunate, Although the thing was loose, almost a small watermelon area of meat was torn off on his bitten left thigh, and the thigh bone inside could be seen from the front. A cyan artery on the outside of the thigh was also exposed for a while, while he himself was in a coma due to excessive blood loss and severe pain.
在 17 世纪的意大利，一名被控使用巫术的年轻接生员必须做出选择：是追求命运多舛的爱情，还是遵从自己强大的命运。
该剧根据河北省枣强县大营镇派出所所长、二级英模范党育同志生前事迹创作。党育在大营镇干了20多年，当了10年派出所长，特别能调解矛盾纠纷。上级决定将派出所与刑警中队合并，升格为分局，解决这一难题。升格前，党育与刑警队长赵光明之间，既有竞争、分歧，又时常高度默契地密切合作，处理了一个又一个事件和案件。党育终于等到派出所升格，当所有人都认为新局长非他莫属时，上级却任命了赵光明为局长。不久，党育又在解决一场长达十几年的家族纠纷中，因一起命案而遭致受贿的诬陷。面对命运的陡变，党育从失落、委屈，到重新认识自己，重新定位，留下来成为赵光明的得力助手。
Finally, the test:
It is easy to see that OvR only needs to train N classifiers, while OvO needs to train N (N-1)/2 classifiers, so the storage overhead and test time overhead of OvO are usually larger than OvR. However, in training, each classifier of OVR uses all training samples, while each classifier of OVO only uses samples of two classes. Therefore, when there are many classes, the training time cost of OVO is usually smaller than that of OVR. As for the prediction performance, it depends on the specific data distribution, which is similar in most cases.
《极限挑战第5季》2019年5月12日起每周日晚爱奇艺全网首播。《极限挑战第5季》东方卫视推出的互动励志体验节目，本季固定成员是罗志祥、张艺兴、王迅、迪丽热巴、岳云鹏、雷佳音。成员们从上海出发一路沿江体验，在长江这条黄金水道上迎接一个又一个“挑战”，展现沿线各地的文化之美、建设之美、生态之美，携手沿途美好生活的创造者、守护者，在奋斗中收获更多自信和勇气。
四处旅游、活泼开朗的贝琪(朱丽叶特·刘易斯 饰)路过小镇，与吉伯特一见钟情，两人很快沉浸在甜蜜的爱情中。贝琪对生活的热情也让吉伯特渐渐认识到，除了家人，生命中他也该有属于自己的追求。阿尼就要过十八岁生日了，这是母亲最后的心愿，待这一切结束，吉伯特能有一个不一样的天空吧。
鲛奴被逐出龙宫，巧遇书生景云瑞.瑞邀奴结伴还乡，并对她渐生爱慕，惟仙凡有别，奴不肯接纳婚聘，瑞抑郁成病。奴偶遇与她容貎酷似的陶万珠，欲设法玉成珠、瑞。后奴获龙王宽恕，赦免放逐，遂向瑞许诺若他肯娶珠，一年后必再相见。一年过去，伊人未见，瑞方知道这是哄骗他迎娶珠的方法，终发疯投奔大海，与奴相见。
该剧讲述了两个性格迥异，生活环境完全不同的女孩本无任何交集，直到某一个晚上，同在异地的两人阴差阳错坐上同一辆旅行大巴，命运将他们连接到了一起。
