"Is-A" refers to the "one" of one class and belongs to another class, while "Has-A" is different, which indicates that a certain role has a certain responsibility. A common reason for the wrong use of inheritance instead of aggregation is to mistakenly treat "Has-A" as "Is-A". For example:
Telecommunications
公孙匡走进二院，就听见东厢传出的哭声，和张大栓喊出的张家崛起，他站住倾听了好一会，面色不住变幻。
碧水书院的人则警惕万分。
该剧从四名刚刚迈入大学校园的女生的视角展开，讲述了她们在大学四年中的成长故事。
美美子作为店长经营着烘焙店"咪咪"，在烘焙店工作虽然感到充实，但招来的兼职很快就因为辛苦的工作日常而辞职了，美美子每天都面临着人手不足的问题。就在这时，一位青年北熏过来应聘兼职。他为什么会来咪咪应聘兼职呢？感觉隐藏着一些秘密。北熏时而帮美美子"顶着沉重的天花板”、帮她"整理架子”，默默地帮助着有爱心也很努力但却是个冒失鬼的、呆呆的美美子，二人之间的距离逐渐拉近。就在这时，面包店制作人柏木突然拿着鲜花出现，他对美美子展开了猛烈的追求。这段爱情脉络将会与烘焙店的经营错综相连。
第一卷附赠OVA
Hallucinations-Like dreams, usually strange feelings produced by the brain out of thin air. It can be divided into three types: auditory hallucination (hearing sounds that do not exist), visual hallucination (seeing people or things that do not exist) and tactile hallucination (touching things that do not exist).
《我最爱的女人们》是一档主打代际关系的明星旅行真人秀节目，由明星带着老婆和老妈一起旅行，从轻松愉快的角度解读家庭成员之间的微妙关系。
——天启的下一部武侠将立足历史背景，主角会为了家国大义，带领义军起义，推翻暴政。
If the rope is loose during the competition, it should be tied back immediately. Otherwise, the competition will be disqualified.
淮河岸边的花岗生产队里，朱、常两姓家族在此繁衍生息，但因历史原因，竟结仇数百年。常庆松因搞副业被游街示众。他的妹妹常柳枝因卖笆斗被县“打把办”关了起来，花岗生产队长朱占金的儿子朱淮川去给她送饭，原来就相互暗恋的两个人建立了爱情，也在两个家族里引起了风波……
To tell the truth, fake when fake sell, no problem, existence is reasonable. If you sell it seriously, you have a lot of problems. Don't ask me why I know so much, count as half of the industry. Many people suspect that I advertise fake products, which is really a bit boring. I have already given such obvious differences, you still can't see it, and I can't help it.
凯莉·玛丽·陈(《星球大战8》)加盟伊丽莎白·奥尔森主演Facebook新剧，该剧正式定名为《节哀顺变》(Sorry for Your Loss)，题材为黑色喜剧。讲述年轻寡妇Leigh Gibbs(奥尔森)一边处理失去丈夫的悲痛，一边与过去重新建立关系。玛丽·陈饰演Leigh的妹妹Jules，她是派对上最有趣的女孩，也是最难相处的女孩，随着姐夫去世，她每天都在努力尝试保持清醒，同时摆脱“家中心有余而力不足的灾难”这一角色。Kit Steinkellner(《缘起泽尔达》)创作，Lizzy Weiss(《错位青春》)担任运作人，James Ponsoldt(《好景当前》《无为大师》)执导首集及其中几集，并担任执行制片人，奥尔森也参与制片。该剧共10集，每集半小时，将在Facebook Watch平台上播出。
这是一部描写女子花样滑冰运动员李荷露和在广告公司工作的三位年轻男人之间关于梦想和爱情的故事。
本剧为《绝命毒师》的前传，讲述律师Saul Goodman的故事。本剧采用非线性叙事。Saul Goodman初次登场时并不叫Saul Goodman，他的名字叫Jimmy McGill，当时只是一个小律师与调查员Mike在一起工作，过着养家糊口的日子。本剧将描述Jimmy转变为Saul Goodman的全过程。
黄金商道地处雁门县与蒙古交界地带，是往来商家必经之地，土匪活动猖獗。巡警朱一书以维护商道治安、惩处走私为己任。以县长庞德坤为首的走私集团为谋取巨大利益，大量走私烟土和军火，并吸收土匪及杀手扩充实力。朱一书通过蛛丝马迹察觉到走私动向并展开调查，庞德坤设法阻止，诬陷他入狱甚至派杀手追杀以绝后患。阴谋与复仇、正义与邪恶的较量逐步展开并愈演愈烈。朱一书在流亡与探求真相过程中，经受了重重考验，从一个单纯正直的热血青年逐步转变为刚毅勇敢的英雄豪杰。在师兄曾石洛、恋人琪琪格等人的帮助下，凤凰涅槃，最终彻底粉碎庞德坤等人的重重阴谋，并找寻到挚爱。黄金商道终于复归平静
For example, in the back-end system, There are tabular data, Each piece of data is preceded by a check box button, When you click the check box button, After obtaining the id, it needs to be passed to the server to send an ajax request. The server needs to record this data, To request, if we send an http request to the server every time we click, For the server, the pressure is relatively high and the network requests are frequent. However, if the real-time data of the system is not very high now, we can collect all ID for a period of time (e.g. 2-3 seconds) through a proxy function and send AJAX requests to the server at one time. Relatively speaking, the network requests are reduced and the server pressure is reduced.
江湖传闻“佛骨舍利”能够使人得道成仙，这让无数人为之觊觎，苦海领的三大妖王“金光寨主”、“半面妆”、“阴风老妖”更是对这传言中的成仙至宝蓄谋已久。所以，裴伦德将带着“佛骨舍利”前往金山寺的消息一经曝出，苦海领的众妖邪便蠢蠢欲动，在各地布下天罗地网，欲抢夺“佛骨舍利”，并威胁着裴伦德与小伍的性命。
