In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.
Visitor pattern decouples the data structure from the operations acting on the structure, making the operation set relatively free to evolve. Visitor pattern is suitable for systems with relatively stable data structure and easy change of algorithm. Because visitor mode makes it easy to increase algorithm operation. If system data structure objects are easy to change and new data objects are often added, visitor mode is not suitable. The advantage of visitor mode is that it is easy to add operations, because adding operations means adding new visitors. Visitor mode centralizes the relevant behaviors into one visitor object, and its changes do not affect the system data structure. Its disadvantage is that it is difficult to add new data structures. -From Encyclopedia
漫长的暑假终于结束。欢迎回到帕里奥利!《反禁年华》第 2 季将于 10 月 18 日回归 Netflix!
Introduction to the Unpacking of AnchorChef Low Temperature Slow Cooking Machine
Also, if the array is empty and no initialValue is provided, a TypeError is thrown
Then each station has its own timetable. If you want to take a bus at which station, you need to check the timetable in advance.
热心助人的阿曼,是小镇上的修理高手,带着他爱讲话万能工具们,什么疑难杂症都难不倒他们。修理东西是阿曼与工具们最爱做的事,在解决问题的过程中,他们学习分工合作、各司其职,并且用积极乐观的态度共同解决。有了这些工具的合作与帮助,阿曼与所有收看节目的小朋友们,都能一起动动脑、学习如何解决不同的问题!
一周前的某个夜晚,距离加州海岸线不远处的一座大型石油公司钻井平台,突然遭到一条身形庞大的巨鲨的袭击,最终导致平台发生剧烈爆炸,彻底损毁。该事故似乎并未引起人们过多的重视,大家都讲起归咎于海底地震。宁静的日子里,海洋调查局的凯瑟琳·卡米高博士(沙拉·列文 Sarah Lieving 饰)租用查克船长(提姆·阿贝尔 Tim Abell 饰)的游艇前往事故地点调查平台毁灭真相;沙滩之上,享受阳光海浪的人们悠哉游哉,全然不知危险将近。凯瑟琳执着追查,并走访相关人员,终于了解到被掩盖的事实。
/v cheer
他特意蹲在离木盘一尺多远的地方,笑道:龟爷爷,抄家的时候,我放在你那的东西,你可藏好了?我说长大了来拿的。
二十世纪八十年代江海小镇。阿桃刚刚死了丈夫,独子通州又在学校运动会上为救一个小同学摔断了腿。阿桃吃尽了千辛万苦,带着儿子四处求医,几乎倾家荡产,仍未能治好儿子的病。火车站,他们遇到了卖唱的盲人小姑娘篮子。在通州的坚持下,阿桃把篮子带回了家。无臂男孩南飞和阿桃相遇,历经一番波折,善良的阿桃还是收下了这个残疾孩子。阿桃带着孩子艰难度日。不想,一日晚上阿桃在自家门口发现了一个弃婴——月月。善良的阿桃又收养了这个小生命。一个特殊的家庭就这样诞生了,寡母阿桃带着几个残疾孩子艰难地生活着。
你我都很清楚,这个人在你这里,无论是你还是他,今后都将寸步难移。
Then we can encapsulate a written examination method with the following code:
原本宁静的阿尔特里亚大陆,被黑龙及其魔物追随者的势力所席卷。乱世下,民不聊生。 绰号小鱼的兰伯特,是生活在小村庄里的普通少年,却为了保护村庄,在误打误撞中作为小跟班加入了为讨伐黑龙而建立的英雄联盟。这支由精灵、魔法师、游侠和传奇战士组成的临时杂牌联盟,踏上了失落已久的古道,翻越诡异的丛林和奇幻的雪山寻觅黑龙的巢穴。可前方,却有意想不到的危机等着他们的到来。 旅程的艰辛和奇异的境遇让兰伯特迅速成长起来,可他最终能找到属于自己的战斗的意义吗?
《DC明日传奇》(DC's Legends of Tomorrow)是一部由CW电视网筹备推出的第三部系列剧,该剧主要讲述了单单依靠英雄的力量已经不足以应付这样的危局…这个世界需要传奇,拥有时空穿越能力的时空猎手已经见到未来发生的一切,他绝望地想要阻止这一切,为此他只能召集由罪犯和英雄组成的一支超能团队,试图阻止这无法阻挡的灭世威胁。
美丽姑娘何青青高中毕业回村做了大队广播员,与知青苏卫东恋爱。1977年双双高考,苏卫东顺利考上大专,何青青却连续三年落榜。为给相依为命的哥哥何大牛换亲,小多忍痛割爱与初恋苏卫东分手,嫁给八卦岭残疾青年赵春来。婚后的何青青一直在爱情与婚姻,梦想与现实间挣扎,一场车祸夺走了丈夫春来和哥哥大牛的生命。嫂子喜鹊造谣何小多谋害金锁。为了给遇难丈夫一个交代、为了偿还欠下的巨债、为了回击喜鹊对自己的诬陷,历经三年艰辛寻凶路,何青青也从美丽的“地瓜嫂”蜕变为强悍的“杀猪婆”。并一个人拉扯三个弟妹长大成人、就在此时何青青查出肝癌,她隐瞒病情,继续寻找喜鹊下落,只为石榴能在婚礼前能与母亲喜鹊团聚。喜鹊喜极而泣,她带着三弟妹动情向何青青叩首谢恩。
罗立夏天资聪颖,大学期间一直属于学霸级人物,出国留学毕业后在外创业,就在他以为登上人生巅峰,创业成功受到万众瞩目之时,却被合伙人陷害,一下跌入人生谷底。回国后罗立夏重燃创业之心,在几个小伙伴与政府的帮助下从零开始经历磨难和挫折后,迅速成长为新一代的创业领导者。
电影讲述了由张磊饰演的记者尕玉冒着生命危险跟随巡山队员进入可可西里自然保护区,一同亲历并见证了猖狂的盗猎分子种种血淋淋的罪证……
/threat
该剧讲述了两位不同环境下成长起来的富二代继承者之间的故事。一位是不愿继承亿万家业的韩嘉琪,一位是面临家业破产的大家闺秀林佳敏。二人在回家的火车相识,等待他们的将是不同的命运。林佳敏站在父林孝宗的遗照前,继母拿着父亲生前的债务欠条将其赶出家门,与此同时韩嘉琪与爷爷频频发生不愉快。