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PS: 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forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated.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.好在很快，沈心语的微.博回应道：很喜欢《笑傲江湖》小说，能为其电影唱主题曲，也是我的荣幸。The Pacific version of Medusa's Raft根据父母的婚姻安排，Yen不得不在她10岁时结婚。 从那时起，她的生活就.....The branches of the fire protection technical service institutions shall practice within the scope of qualifications obtained by the branches.Join the army of chasing more. Although I have long been accustomed to paranormal, it is the first time I have seen this type of paranormal.