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How to generate random SHA1 hash to use as ID in node.js?
...oString();
crypto.createHash('sha1').update(current_date + random).digest('hex');
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Quickest way to convert a base 10 number to any base in .NET?
... binary = IntToString(42, new char[] { '0', '1' });
// convert to hexadecimal
string hex = IntToString(42,
new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F'});
// convert to hexavigesimal (base ...
一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
一文了解大数据领域创业的机会与方向跨界和融合是大数据思维里最重要的一环，大数据就像是钱一样，你得让它流动起来才能产生价值。在这篇大数据行业的SWOT分析文章中，也许可以找到你想了解的大数据行业创业环境、问...
CSS3 Transparency + Gradient
...
);
(src)
Apparently you can even do this in IE, using an odd "extended hex" syntax. The first pair (in the example 55) refers to the level of opacity:
/* approximately a 33% opacity on blue */
filter: progid:DXImageTransform.Microsoft.gradient(
startColorstr=#550000FF, endColorstr=#550000FF
)...
Collisions when generating UUIDs in JavaScript?
...
node-uuid has a test harness that you can use to test the distribution of hex digits in that code. If that looks okay then it's not Math.random(), so then try substituting the UUID implementation you're using into the uuid() method there and see if you still get good results.
[Update: Just saw Ve...
What is the difference between encode/decode?
...somecodec) is meaningful for these values of somecodec:
base64
bz2
zlib
hex
quopri
rot13
string_escape
uu
I am not sure what decoding an already decoded unicode text is good for. Trying that with any encoding seems to always try to encode with the system's default encoding first.
...
淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...设计了秒杀系统，文章主要介绍大秒系统以及这种典型读数据的热点问题的解决思路和实践经验。一些数据
大家还记得2013年的小米秒杀吗？三款小米手机各11万台开卖，走的都是大秒系统，3分钟后成为双十一第一家也是最快破...
阿里巴巴：大数据基础建议及产品应用 - 资讯 - 清泛网 - 专注C/C++及内核技术
阿里巴巴：大数据基础建议及产品应用大数据产品之道生意参谋，伴梦成长阿里巴巴数据技术及产品部大数据能力之我见数据产品大脑，产品设计和服务能力：举例：痛点->爽点->爆点，...
大数据产品之道“生意参谋，伴梦成长...
How to properly add cross-site request forgery (CSRF) token using PHP
...ion_start();
if (empty($_SESSION['token'])) {
$_SESSION['token'] = bin2hex(random_bytes(32));
}
$token = $_SESSION['token'];
Sidenote: One of my employer's open source projects is an initiative to backport random_bytes() and random_int() into PHP 5 projects. It's MIT licensed and available on ...
数据分析非要用到大数据？ - 资讯 - 清泛网 - 专注C/C++及内核技术
数据分析非要用到大数据？随着移动互联网的时代到来，大数据运营越来越被人们所提及，很多CMO、COO和数据分析专家都在探索和寻找自己的公司是否可以从大数据中得到最...随着移动互联网的时代到来，大数据运营越来越被人...