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How to convert UTF-8 byte[] to string?
...ts b4b5dfe475e58b67
public static class Ext {
public static string ToHexString(this byte[] hex)
{
if (hex == null) return null;
if (hex.Length == 0) return string.Empty;
var s = new StringBuilder();
foreach (byte b in hex) {
s.Append(b.ToString(...
Most lightweight way to create a random string and a random hexadecimal number
...
I got a faster one for the hex output. Using the same t1 and t2 as above:
>>> t1 = timeit.Timer("''.join(random.choice('0123456789abcdef') for n in xrange(30))", "import random")
>>> t2 = timeit.Timer("binascii.b2a_hex(os.urandom(15...
How to hash some string with sha256 in Java?
...a, and if you want to represent that in a string, you should use base64 or hex... don't try to use the String(byte[], String) constructor.
e.g.
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] hash = digest.digest(text.getBytes(StandardCharsets.UTF_8));
...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...量中，更多的关注于可用性。
3) 依赖关系
平台中各个模块之间的关系尽量是低耦合的，可以通过相关的消息组件进行交互，能异步则异步，分清楚数据流转的主流程和副流程，主副是异步的，比如记录日志可以是异步操作的...
Restore the state of std::cout after manipulating it
...exactly what you need. :-)
Example based on your code snippet:
void printHex(std::ostream& x) {
boost::io::ios_flags_saver ifs(x);
x << std::hex << 123;
}
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Generate random string/characters in JavaScript
...two, for example, you'll see your number represented in binary. Similar to hex (base 16), base 36 uses letters to represent digits beyond 9. By converting a random number to base 36, you'll wind up with a bunch of seemingly random letters and numbers.
– Chris Baker
...
How to create a GUID/UUID in Python
....uuid4())
'f50ec0b7-f960-400d-91f0-c42a6d44e3d0'
>>> uuid.uuid4().hex
'9fe2c4e93f654fdbb24c02b15259716c'
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Add leading zeroes/0's to existing Excel values to certain length
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This works well with decimal numbers... but what about hexadecimal? I can't find a way to make leading 0s work with it...
– Shadow
Nov 23 '12 at 4:29
10
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阿里全资收购陌陌？突围社交抗衡微信 - 资讯 - 清泛网 - 专注C/C++及内核技术
...一笔稳赚不赔的生意。
“社交是个大市场，阿里现有的模块，不管是淘宝、支付宝都有社交功能，但社交一直是阿里的短板。”鲁振旺认为，利用陌陌现有的用户群和社交功能，打通阿里旗下各个模块的社交问题，弥补社交短...
WEB端测试与移动端测试的区别 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...到通过主题可以知道本antis记录的是什么问题。如果有多模块、多个子系统如主站、后台等同时参与测试，最好开始就标记是哪端或哪个系统、那个模块的问题。
环境及系统：移动端由于手机和版本较多，因为在bug的时候尽量...