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大数据不是万能的 - 资讯 - 清泛网 - 专注C/C++及内核技术

...地方。我们认为,大数据其实面对的不是99%的机构面对的问题,这个说法跟市场上很多的说法不大一样。 我们看一下,把这个额度分配到一万到十万区域。在这个领域从事信贷服务的,大家马上想到的是信用卡,也可能想到某...
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What is SQL injection? [duplicate]

...sult of queries, reading data or even changing data that they shouldn't be allowed to do. Example in PHP: $password = $_POST['password']; $id = $_POST['id']; $sql = "UPDATE Accounts SET PASSWORD = '$password' WHERE account_id = $id"; Now suppose the attacker sets the POST request parameters to "...
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Convert HTML + CSS to PDF [closed]

...ce. Significantly cheaper upfront costs, and usable without needing to install anything: docraptor.com – Joel Meador Jan 11 '11 at 8:31 6 ...
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php 获取操作系统、浏览器版本信息(持续更新) - 更多技术 - 清泛网 - 专...

php 获取操作系统、浏览器版本信息(持续更新)有时我们需要在服务器端收集用户操作系统版本,以及用户使用何种浏览器等信息,本文主要提供getOS、getBrowser、getBrowserVer三个方法,对网上各方法进行测试汇总整理,持续更新...
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记一次数据库表自增长(Auto Increment)故障 - 数据库(内核) - 清泛网 - ...

...被一阵急促的报警短信声惊醒,原来是数据库的某个表出问题了,虽然查询操...故障的来龙去脉大致是这样的:在一个月黑风高的晚上,苦逼的程序员被一阵急促的报警短信声惊醒,原来是数据库的某个表出问题了,虽然查询操...
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一文讲透区块链技术原理 - 资讯 - 清泛网 - 专注C/C++及内核技术

...定是可信的。 区块链技术原理的来源可归纳为一个数学问题:拜占庭将军问题。拜占庭将军问题延伸到互联网生活中来,其内涵可概括为:在互联网大背景下,当需要与不熟悉的对手方进行价值交换活动时,人们如何才能防止...
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Regular expression for letters, numbers and - _

... To actually cover your pattern, i.e, valid file names according to your rules, I think that you need a little more. Note this doesn't match legal file names from a system perspective. That would be system dependent and more libera...
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迅雷发布无限节点CDN 每GB仅0.1元 - 资讯 - 清泛网 - 专注C/C++及内核技术

...欠发达地区节点资源则明显不足,这种资源分布不均匀的问题,直接影响了CDN的价值。 与众CDN服务商节点增加方式不同的是,迅雷在业内启用个人节点,通过连接至千万个家庭路由的赚钱宝们,织成一张节点均匀密布于全网的...
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Get week of year in JavaScript like in PHP

...light saving was observed and years where 1 Jan was Friday. Fixed by using all UTC methods. The following returns identical results to Moment.js. /* For a given date, get the ISO week number * * Based on information at: * * http://www.merlyn.demon.co.uk/weekcalc.htm#WNR * * Algor...
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How do I check if a string contains a specific word?

... return true because the string contains 'are'. If you are looking specifically for the word ARE then you would need to do more checks like, for example, check if there is a character or a space before the A and after the E. – jsherk Nov 14 '12 at 21:35 ...