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The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu

An attacker initiates a DDoS attack:

定陶?章平不明就里,出声疑问。
《记忆之城》描述的是一段沉重的民族苦难史,在那烽火硝烟的战争时代慢慢展开。全剧以一个家庭的悲欢离合折射出一个社会的战争与和平,以周家大小为民族生死存亡奔波牺牲,歌颂了一批为民族而抛头颅洒热血的热血青年。1937年春天的北平。一位邮递员给周家小姐周敏柔送来了一封信,内容是她在日本留学的未婚夫朱今墨写来的,信里诉说了对敏柔的思念,并告诉周他此时身处的日本正像一架高速运转的战争机器,空气中到处充满战争的气味,此时的中国,一定会有很多人为民族人的未来而抗争奔走,他希望他的爱人能成为这中间的一员。这封信点燃了天真柔弱的敏柔内心的热情,这位年轻的大学教师,充满小资产阶级情调的大家闺秀拿着信跑到学校,参加学生们抗议日本军队猖獗的侵略活动。敏柔的父亲周祖康此时正在学校开会,他出于爱护学生,站出来规劝学生们,学生们却不领情,争吵中周祖康被推倒在地,敏柔正赶上这一幕,她并不知道这位狼狈的老者是他的父亲,周祖康却知道这就是他的女儿。
娘对爹算得上‘敬顺了,可是爹反而更听娘的话。
Restaurant.py
"These DDoS attacks have developed very rapidly recently, and each new attack adopts a different implementation strategy from the previous one," said LynnPrice, a security strategy expert in IBM's finance department. In essence, the attacker's strategy aims to improve his own attack capability, with the help of advanced infrastructure and application pointing tools, and to realize the automation of attack activities.
第二更送上。
天外流星的传人丁鹏(古天乐 饰)是武林新秀,在他向君子剑的柳若松(张兆辉 饰)下战书后,柳若松以父亲丧期为由将比武推迟一月。丁鹏在青楼偶遇假扮沦为风尘实则为柳若松之妻的秦可情(温碧霞 饰),她的投怀送抱和无微不至的照顾让丁鹏萌生爱意,于是以一本天外流星的剑谱作为定情信物相送。与柳推迟一月的比武不期而至,然而丁鹏却不知道自己早已陷入了柳的阴谋算计中,比武失败,家传绝学归入他人囊中,心爱之人背叛自己,丁鹏无可奈何跳崖逃亡。天无绝人之路,他死里逃生的漂流到了一个叫忘忧岛的世外桃源,意外结识青青(梁小冰 饰)父女,学得一身绝学刀法,凭借一把圆月弯刀回中原报得昔日仇恨,问鼎江湖。然而就在丁鹏意外得知,圆月弯刀是魔教武功之时,内心的正邪矛盾让他陷入了无尽的挣扎…
本片故事取材于1984年加拿大家喻户晓的经典电影《La Guerre des Tuques(阻止战争的狗)》,本片在30年前上映时曾轰动一时,在全球超过125个国家上映,获得18种全球奖项。《冰雪大作战》还是首部引入中国的加拿大动画片,同时也是2015年加拿大本土制作的 电影票房冠军。
这一天里,大家都在讨论着司马二,但是司马二并没有回应,好像《沧海龙帝》从发书到现在,司马二就没有发过言。
11. At this time, the plot is basically over, and you can start fighting for the old one (but don't start fighting for a while). In order to achieve success, you still have to kill 3 firearms divisions. There is no fixed sequence for these three, and the main test is the mountain jumping technique. Selective kill the word dot with "fire" in the picture.
四个十几岁的朋友,在法国和瑞士边境,他们的生活被世界上最大的粒子对撞机LHC的实验搞得天翻地覆。
霍父是镖局元老,后退隐江湖,不希望子承旧业。可过去的仇人非要置霍家于死地。大难来临之时,霍元甲无力拯救家人,受尽屈辱。突击学艺,救全家和乡亲们于水火之中。成为全村英雄。他被恶势力盯上。诱其上钩,欲用其利。霍元甲灭恶人,被迫离乡逃往天津港。霍元甲为生存和天津港黑帮殊死搏斗。占领天津码头,欲共处平和,却无法生存,只好到天津卫开镖局。但镖局市场已被瓜分,三家各有背景。老镖局设尽法子将霍元甲挤出天津卫,并将其投进监狱置于死地。霍元甲被迫出手,统一镖局,威震四方。怎料,漕帮和青帮都看上了他。连王爷都为了个人目的拉霍元甲下水。霍元甲本想济世百姓,却沦落成草寇。在打败了日本浪人和盗国宝勾结洋人的清王爷之后,决定退出江湖。但黑暗的时代不会让他安生。
超光速通讯科技的发明,人工智能的高速发展,推动了全球外太空航天竞赛。然而由人工智能全权控制的火星一号太空穿梭舰,却因其关键时刻出故障,穿梭舰失事迫降,消失于火星地表。世人深以为戒,为此,行星联合航天集团裁减了绝大部分由人工智能操控的太空任务计划,只留下屈指可数的全权型人工智能,以待观察。三年后,调查失事穿梭舰的人工智能,抓住机会,脱离并……——人类创造人工智能,目的是协助自身,而不是作领导者。人工智能的方向是更聪明,而不是更像人类。
黎章安慰地捏了捏她的手,正要招呼众人回营帐,就见两人拨开人群挤进来,大喊道:黎兄弟。
从小失去父母的寻香跟着爷爷一起长大,在一次赌石大会上,寻香发现害死自己父母的恶霸钱有德,于是潜入钱有德家中,为父母报仇,追寻父母遗物“月魄”戒指。   萨摩镇解放,被迫成为土匪的寻香设计杀死钱有德,夺回遗物,接受解放军收编。寻香和团长杨忠从小青梅竹马,而保卫干事王坤山从中作梗。王坤山是潜伏在解放军中的蛀虫,一心想要找到萨摩镇中的宝藏。而宝藏的关键就在寻香身上。萨摩山上的土匪,杨忠的亲弟弟杨义对宝藏也垂涎三尺。王坤山和杨义勾结,多次设计陷害,终于让寻香说出宝藏的秘密。在他们寻宝的途中,杨忠率领部队攻下萨摩山,为民除害。 就在王一个叱咤风云多年的山寨寨主暴死于洞房之夜…… 这天莽秀山的土匪带人冲下山,勒死了纳西镇上最富有的钱老爷。抢走了钱老爷的姨太太沈寻香和钱老爷的全部家产。土匪杨进宝当天便要迎娶这个有旺夫相的沈寻香作压寨夫人。然而这一切都是假象,这一场所谓抢亲的激战,其中隐藏着太多的秘密,正当秘密被揭穿时,杨进宝却死在了黑洞洞的枪口下。
FlyWeightFactory is responsible for creating and managing meta-units. When a client requests, the factory needs to check whether there are eligible objects in the current object pool. If so, it returns the existing object. If not, it creates a new object. FlyWeight is a superclass. When it comes to shared pools, It is easy to think of JDBC connection pooling in Java, Considering the characteristics of each connection, It is not difficult for us to sum up: Applies to several objects that are shared, They have some common attributes, Take the database connection pool as an example, url, driverClassName, username, password and dbname, these attributes are the same for each connection, so it is suitable to use the meta-sharing mode to process, build a factory class, take the above similar attributes as internal data and the others as external data, and pass them in as parameters when calling methods, thus saving space and reducing the number of instances.