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史蒂芬·金与J·J·艾布拉姆斯再度携手，打造Hulu新剧《城堡石》(Castle Rock，暂译)。该剧会把史蒂芬·金数部小说及短篇故事集中在一个背景地点展现，预热先导预告也同时发布。尚不知道该剧会以独立故事构成，还是会用不同作品串联成一个完整故事。D > B enters the synchronized block, and since instance is not null at this time, it immediately leaves the synchronized block and returns the result to the program calling the method. E > At this point, thread B intends to use the Singleton instance, only to find that it has not been initialized, so an error occurs. Therefore, there is still the possibility of errors in the program. In fact, the running process of the program is very complicated. From this, we can see that it is more difficult and challenging to write programs especially in multi-threaded environment. We further optimized the program: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forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated.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.顾涧同时应付南雀军和水**队，虽然吃力，但有周先生帮着运筹，倒也支持住了。寒风吹胸中热，关东魂何能灭，义士捐躯千古恨，换来广宇添春色，谨以此片献给抗日战线上的无名英雄。日自卫军第十九路军司令。王凤阁将军与十八路军独立团长王殿阳组成了一支强有力的抗日武装，向敌人展开神出鬼没的袭击战、对抗战、歼灭了侵略军、伪军，并狠狠地惩罚了汉奸。The Lins have many back gardens, but the orchid garden has a special significance and is the first one in the Lins' old house.