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Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
Linux日志管理Rsyslog入门Rsyslog 日志管理 入门在数据为王的时代，日志管理是一个绕不开的话题，相应的开源软件有不少，比如热门的三件套：Logstash、ElasticSearch、Kibana，可惜我对这...在数据为王的时代，日志管理是一个绕不开的...
How to get a random number in Ruby
...
If you're not only seeking for a number but also hex or uuid it's worth mentioning that the SecureRandom module found its way from ActiveSupport to the ruby core in 1.9.2+. So without the need for a full blown framework:
require 'securerandom'
p SecureRandom.random_number...
C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...按位与”运算符(&)
1、运算规则
参加运算的两个数据，按二进位进行“与”运算，如果两个相应的二进位都为1，则该位的结果值为1，否则为0，即：
0&0=0，0&1=0，1&0=0，1&1=1.
2、用途
(1)清零
运算对象：...
What does (x ^ 0x1) != 0 mean?
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^ is the bitwise XOR operation
0x1 is 1 in hex notation
x ^ 0x1 will invert the last bit of x (refer to the XOR truth table in the link above if that's not clear to you).
So, the condition (0 != ( x ^ 0x1 )) will be true if x is greater than 1 or if the last bit of ...
STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...制“<”: “const a”不定义该运算符或到预定义运算符可接收的类型的转换
定位错误
定位到第一个错误行的代码位置：f:\vs2008\vc\include\functional(143) :143行代码：
// TEMPLATE STRUCT less
emplate<class _Ty>
struct less
: public binary_funct...
手握利器，直面“蓝脸”! ——使用WinDbg抗击系统崩溃 - 操作系统(内核) - ...
...道该错误是否能被隔离出来从而不伤害系统的其它程序与数据，或者该组件将来是否能够恢复正常，而且，Windows深知，这个异常更有可能来源于更深层的问题，比如由于内存的常规破坏(General Corruption)，或者由于硬件设备不能正...
Parsing HTML into NSAttributedText - how to set font?
...ability to set text color, just add color to style attribute with value in hex string format color: #000000. See this link for converting UIColor to hex string: gist.github.com/yannickl/16f0ed38f0698d9a8ae7
– Miroslav Hrivik
Aug 16 '17 at 14:19
...
Find CRLF in Notepad++
...ither Ctrl+M, $ nor \r\n are matched.
The same wiki also mentions the Hex editor alternative:
Type the new string at the beginning of the document.
Then select to view the document in Hex mode.
Select one of the new lines and hit Ctrl+H.
While you have the Replace dialog box up...
20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... FIFO 0,17 953 /dev/initctl
4. tcpdump — 网络数据包分析器
tcpdump 是一种使用最广泛的命令行网络数据包分析器或数据包嗅探程序，主要用于捕获和过滤 TCP/IP 包收到或者转移在一个网络的特定借口信息。它也提供了...
What does the git index contain EXACTLY?
...e we haven't modified the file
The first bytes are seconds since EPOCH in hex:
date --date="@$(printf "%x" "540976e6")"
Gives:
Fri Sep 5 10:40:06 CEST 2014
Which is when I made this example.
The second 4 bytes are nanoseconds.
UID and GID are 00 00 03 e8, 1000 in hex: a common value for sin...