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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forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated.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.The third parameter is the error message returned when the validation fails.电视剧《燃情密码》作为第一部讲述消防队员如何破解消防案件的影视剧集而备受关注。故事围绕火灾调查处的日常工作展开,通过消防员对案件的取证,调查,破获等多个程序,深入了解消防员日常的工作和生活情况。一声哀号划破了优美的巴哈乐章，一颗带血人头从阳台滚落屋内，受害者身首异处，死状奇惨。查明尸体身份后，警方很快锁定六位嫌犯：黑白通吃的暴力恶警、患有亚氏保加症的自闭宅男、大胆染指学生的名校教师、家庭破碎后寂寞抑郁的学霸少女、终日闭门苦练琴艺的边缘少年，以及隻身赴港求存却屡遭歧视的南漂妓女，每人都与死者有着复杂难解的恩怨情仇。如果真相只有一个，凶手将会是谁？《金牌红娘》是由台湾导演林育塘执导，湖南卫视官方网络平台芒果TV定制的古装喜剧。该剧于2014年8月将在北京开拍，汇集了徐璐、韩承羽、李帅、井凌潇等一批90后的优质青春偶像。2014年11月1日芒果TV与观众正式见面。再迟一步，是郑家和赵家的仪仗执事队伍，郑长河父子和赵三也登上马车，随行人众直排了一两里路远，也是鼓乐齐鸣，往下塘集行去。