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为什么你得学些 TCP 的知识？ - 环境配置 - 清泛IT社区，为创新赋能！
...文章中的关键段落：延迟确认（ACK） 与 TCP_NODELAYRuby 的 Net::HTTP 会将 POST 请求切分为两个 TCP 包，一个消息头，一个消息体。相反，curl 会将这两者合并为一个包。更糟糕的是，Net::HTTP 在打开 TCP 套接字时不会设置 TCP_NODELAY，这将...
Linux 网卡速率（百兆/千兆）的查看及调整 - 操作系统(内核) - 清泛网 - 专...
Linux 网卡速率（百兆/千兆）的查看及调整linux_ethnet_speed最近遇到一个奇怪的问题，程序运行过程中网卡打满，导致服务通信全部超时，程序需要在局域网中的通信流量较大，机器是千兆网卡。但通过监控查看实际网速只到了100Mb...
/proc 内核统计信息各文件的含义 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...at timerslack_ns
auxv cpuset gid_map map_files/ net/ pagemap schedstat statm uid_map
cgroup cwd@ io maps ns/ patch_state sessionid status wchan
clear_refs environ latency mem numa_maps...
How to Remove ReadOnly Attribute on File Using PowerShell?
...
Shell("net share sharefolder=c:\sharefolder/GRANT:Everyone,FULL")
Shell("net share sharefolder= c:\sharefolder/G:Everyone:F /SPEC B")
Shell("Icacls C:\sharefolder/grant Everyone:F /inheritance:e /T")
Shell("attrib -r +s C:\\sharefol...
How can you search Google Programmatically Java API [closed]
...ogleapis.com/ajax/services/search/web. Documentation here
Java offers java.net.URL and java.net.URLConnection to fire and handle HTTP requests.
JSON can in Java be converted to a fullworthy Javabean object using an arbitrary Java JSON API. One of the best is Google Gson.
Now do the math:
public s...
PHP prepend leading zero before single digit number, on-the-fly [duplicate]
...
You can use sprintf: http://php.net/manual/en/function.sprintf.php
<?php
$num = 4;
$num_padded = sprintf("%02d", $num);
echo $num_padded; // returns 04
?>
It will only add the zero if it's less than the required number of characters.
Edit: As poin...
How do you get centered content using Twitter Bootstrap?
... two classes, row or span12 with a text-align: center. See http://jsfiddle.net/xKSUH/ or http://jsfiddle.net/xKSUH/1/
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Visual Studio jump to next error shortcut?
When a compile fails in VB.NET in Visual Studio 2008, an Error List pops up at the bottom of the screen. To jump to an error, I double click on an error in the error list.
...
Compare two objects and find the differences [duplicate]
...e code here doesn't work. Here's a fiddle that shows a couple of fixes: dotnetfiddle.net/FhzcrS
– Don Rolling
Aug 23 '17 at 18:51
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What is hashCode used for? Is it unique?
... guarantee unique return values for different objects. Furthermore, the
.NET Framework does not guarantee the default implementation of the
GetHashCode method, and the value it returns will be the same between
different versions of the .NET Framework. Consequently, the default
implementation...