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What is the significance of initializing direction arrays below with given values when developing ch

...6. .1X0. .724. ..... The way it is set up, if you do ^1 (^ being bitwise XOR) on the index you get the opposite direction - 0 and 1 are opposites, 2 and 3 are opposites and so on. (Another way to set it up is to go clockwise starting at north - then ^4 gets you the opposite direction.) Now you ca...
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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...应用程序。 比如:假设有一个图像转换服务,调整图像所需的尺寸和分辨率。所有提供转换的服务、所有使用该服务的应用程序以及所有的中间节点,比如负载均衡等,共同组成了拓扑。 通常,...
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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...应用程序。 比如:假设有一个图像转换服务,调整图像所需的尺寸和分辨率。所有提供转换的服务、所有使用该服务的应用程序以及所有的中间节点,比如负载均衡等,共同组成了拓扑。 通常,...
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`testl` eax against eax?

...rom the same bag of tricks that holds the idea of clearing a register with XOR EAX,EAX (which i saw on someone's license plate in Colorado!) rather than the obvious but maybe slower MOV EAX, #0 (i use an older notation). In asm, like perl, TMTOWTDI. ...
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ZMQ: 基本原理 - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术

...应用程序。 比如:假设有一个图像转换服务,调整图像所需的尺寸和分辨率。所有提供转换的服务、所有使用该服务的应用程序以及所有的中间节点,比如负载均衡等,共同组成了拓扑。 通常,...
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Best way to find the intersection of multiple sets?

...of "take the sum of all these", "take the product of all these", "take the xor of all these", what you are looking for is the reduce function: from operator import and_ from functools import reduce print(reduce(and_, [{1,2,3},{2,3,4},{3,4,5}])) # = {3} or print(reduce((lambda x,y: x&y), [{1,...
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三大运营商公布提速降费 比比谁更实惠? - 资讯 - 清泛网 - 专注C/C++及内核技术

...低用户通信支出。 中国联通将北京地区20M固定宽带资费1780元/年降至1480元/年,50M资费2680元/年降至1780元/年,100M资费3280元/年降至1980元/年。 网友评论: @胡晓奇:感谢克强总理!昂贵的通讯费,终于开始降价了。 @tigerhua_bike:...
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How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?

...milarly to stream ciphers generally, the generated pseudo random stream is XORed with the plaintext to generate the ciphertext. As you can use as many bits of the random stream as you like you don't need padding at all. Disadvantage of this simplicity is that the encryption is completely malleable, ...
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新浪微博 阿里巴巴囊中物? - 资讯 - 清泛网 - 专注C/C++及内核技术

...公司18%的股份,成为新浪的第二大股东。目前,阿里持有新浪剥离出来的微博公司32%股权。 在分析人士看来,对优酷土豆的资本运作来看,阿里采取了先入股后全资收购的做法,这点来看,它也同样可能对新浪微博采取...
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mongodb, replicates and error: { “$err” : “not master and slaveOk=f...

...r and slaveOk=false”, “code” : 13435出现这个错误的原因是在库上执行命令导致,默认情况下只有主库可以执行命令。当然可以通过设置使得库也能执行命令,具体参见:http: s 出现这个错误的原因是在库上执行命令导致,...