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What is a non-capturing group in regular expressions?
...1).
Let's try some substitutions now. Consider the following text:
Lorem ipsum dolor sit amet consectetuer feugiat fames malesuada pretium egestas.
Now, let's use this dumb regex over it:
\b(\S)(\S)(\S)(\S*)\b
This regex matches words with at least 3 characters, and uses groups to separate th...
也来说说ReactOS的调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...打开fDebug,如图:
唉,白呀,打开”文件”?”Connect”,在端口那输入” \\.\pipe\com_1”下面默认,确定
提示
晕,怎么回事?用windbg就可以啦.打开源码看看,(有源代码就是好,^_^);这个程序的代码很少.
看到这,就知道怎么回事了(注...
Mysql adding user for remote access
...o connect remotely you have to have MySQL bind port 3306 to your machine's IP address in my.cnf. Then you have to have created the user in both localhost and '%' wildcard and grant permissions on all DB's as such . See below:
my.cnf (my.ini on windows)
#Replace xxx with your IP Address
bind-addre...
Linux C/C++程序常用的调试手段及异常排查总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...到本地文件、标准输出、远程服务器等，这样比较方便，实时性也较好(对于一些比较低端的系统，承受不来valgrind等高级工具的，还是不错的选择)，可以看下这篇文章，基本是一样的Android Native Crash。
程序正常，程序性能瓶颈...
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
...achable at all. This can have one or more of the following causes:
IP address or hostname in JDBC URL is wrong.
Hostname in JDBC URL is not recognized by local DNS server.
Port number is missing or wrong in JDBC URL.
DB server is down.
DB server doesn't accept TCP/IP connections.
D...
Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...开，包括城市接单率、好评率以及业务增长率。“我可以实时看到每天的数据。”王晓峰说，“如果发现某个城市表现突出，各地区负责人会实时讨论，通过电话或视频会议，不需要专门组织，大家都是随时随地讨论。”比如，...
What can be the reasons of connection refused errors?
...king for firewalls and that the port is open, use telnet to connect to the ip/port to test connectivity. This removes any potential issues from your application.
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HTTP test server accepting GET/POST requests
...ttps://httpbin.org/anything Returns most of the below.
https://httpbin.org/ip Returns Origin IP.
https://httpbin.org/user-agent Returns user-agent.
https://httpbin.org/headers Returns header dict.
https://httpbin.org/get Returns GET data.
https://httpbin.org/post Returns POST data.
https://httpbin.o...
Connect to a locally built Jekyll Server using mobile devices in the LAN
...e command line.
That will make Jekyll's HTTP server bind to all available IPs, rather than just to localhost.
You can also add this to your _config.yml with host: 0.0.0.0. GitHub will simply ignore this when you push, so it's safe to use if you don't mind having your work openly accessible on your...
How do I simulate a low bandwidth, high latency environment?
... instructions, you're enabling a firewall. For just simulating a different IP connection, you could (for example) do the following:
Create a file /etc/rc.firewall.56k which contains the following:
ipfw add pipe 1 ip from any to any out
ipfw add pipe 2 ip from any to any in
ipfw pipe 1 config b...