Cannot use arguments.callerPS: Many forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated. Maybe Microsoft will launch a new SOA implementation scheme at that time. Wouldn't it be a waste of time to learn in depth, so they feel that there is no need to learn in depth and just know how to use them. I had the same feeling about this problem before, but now I think that although WCF technology may be replaced, the key to understanding a technology in depth is not to know some more advanced API calls, but to understand its implementation mechanism and way of thinking. Even if the latter technology is replaced, the mechanism behind it is definitely similar. Therefore, if you have a thorough understanding of a technology, you will feel familiar with the new technology and relaxed about it. In addition, after you have a thorough understanding of a technology, you dare to say that you have mastered the technology well during the interview, instead of saying that you use it a lot at ordinary times. Once you ask deeply, you do not know the implementation principle behind it. This is also why I want to write WCF series. I hope this opinion is helpful to some beginners.《纯金的地》以上世纪50年代至70年代为背景，讲述特殊时期的乡村奋斗故事。战争不仅分裂了土地，也制造出无数的离散家庭。虽然饱受痛苦却从不停止寻求治愈的家族之爱，为我们勾勒出那一辈人生活的一个侧面，他们心藏着连父母和子女的生死都无法得知的悲痛，却也在坚强的生活。年幼的郑纯金和父亲在集市上华丽的口才和歌唱实力，吸引了人们的眼球。他们通过说唱这种方式，推销着“朴家粉”驱虫剂。在这个他们即将扎根的村落，纯金的命运将会如何改变？她和新结识的孩子们又会有怎样的故事展开呢？Baidu Encyclopedia, the factory model describes in great detail why factories should be used instead of new. Such problems can be found by oneself. . . . .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"Later things became more serious, The Vietnamese army attacked more than seven or eight times in a row. But it was almost halfway through the fire of the artillery group. Occasionally, sporadic ones escaped gunfire, Can't hide from our accurate shooting, Because the explosive power of the shells is very large, Apart from being killed by shrapnel at a long distance, It is normal for those who are closer to me to be blown to death without a whole body. At that time, because of the open terrain on our side, So the superior is more 'generous', In order to better understand the enemy situation and give full play to the terrain advantage of position 142, All the front-line officers and soldiers in our squad leader and above positions are equipped with binoculars, which is absolutely not treated in other positions. If other positions want to have their own binoculars, they have to be a deputy platoon leader. As a squad leader like me, I am still very proud to be able to observe the enemy's situation with binoculars.韩国BL新剧 #ColorRush# 要来啦，预计年末全球首播！讲述的是主人公因为是色盲看到的整个世界都是灰色的，但是遇到命中注定的他之后通过强烈的经历开始出现能看到彩色的“Color Rush”现象，从而发生的一系列故事。
