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Generating an MD5 checksum of a file

...used this solution but it uncorrectly gave the same hash for two different pdf files. The solution was to open the files by specifing binary mode, that is: [(fname, hashlib.md5(open(fname, 'rb').read()).hexdigest()) for fname in fnamelst] This is more related to the open function than md5 but I th...
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What's the difference between using “let” and “var”?

... See page 19 of ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf – Tyler Crompton Jun 18 '12 at 20:16 @T...
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...用内存最多),所以如果 Out of Memeory (OOM) 的话总是不幸一个被 kill 掉。解决这个问题最简单的办法就是增加内存,或者想办法优化 MySQL 使其占用更少的内存,除了优化 MySQL 外还可以优化系统(优化 Debian 5,优化 CentOS 5.x),...
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2015互联网结束补贴战 从相杀到相爱只需一个长假 - 资讯 - 清泛网 - 专注C/...

...婚”。2月的情人节,滴滴和快的“闪婚”就像是倒下的一张多米诺骨牌。在随后不到一年的时间内,58同城和赶集网、美团和大众点评、携程和去哪儿,这些过去竞争多年的对手们相继合并。为何一夜之间行业老大和老二都在...
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List of ANSI color escape sequences

...ary sources at: ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf and itu.int/rec/… . Also some interpretations forget the color space Id in the 2 (16M-color RGB)/3 (16M-color CMY) /4 (??? CMYK) forms - e.g. it should be \033[38:2::255:255:255m for a White 16M foreground and not \033[...
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Which cryptographic hash function should I choose?

... I would say: RIPEMD BROKEN, Should never be used as can be seen in this pdf MD-5 BROKEN, Should never be used, can be broken in 2 minutes with a laptop SHA-1 BROKEN, Should never be used, is broken in principal, attacks are getting better by the week SHA-2 WEAK, Will probably be broken in the n...
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企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的L3/4实际上指的就是负载平衡服务器会根据OSI模型中的三层网络层(Network Layer)和四层传输层(Transport Layer)所包含的数据来进行负载平衡操作。在这种负载平衡服务器中,这些数据主要包含数据包的IP头和TCP、UDP等协议...
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MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区,为创新赋能!

...把宝洁的供应链上的RFID标签和互联网连接起来,在1999年一个提出了IoT这个概念。发明人TCP协议的发明人是Vinton Cerf(下图左,曾在IBM工作过两年)和Robert Elliot Kahn(下图右)。 MQTT的发明人是IBM的Andy Stanford-Clark(右)和Arcom的A...
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程序员之网络安全系列(五):数字证书以及12306的证书问题 - 更多技术 - ...

...,也叫“证书授权中心”。 它是负责管理和签发证书的三方机构,就好比例子里面的“敏捷的水”。一般来说,CA 必须是大家都信任的、认可的。因此它必须具有足够的权威性。只有明明和丽丽都信任的人才能来证明,对吧...
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How to pull request a wiki page on GitHub?

....maven.org/maven2/com/devonfw/java/doc/devon4j-doc/3.2.0/devon4j-doc-3.2.0.pdf https://github.com/devonfw/devon4j/blob/develop/.travis.yml share | improve this answer | fol...