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HTTPKeepAlive，开启还是关闭 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...it is active – (reading + writing)
实际复用HTTP连接的效果如何呢：
67713042963 / 66542336512 = 1.01 requests per connection
额滴神啊，基本等同于没用！为什么会这样？因为这是一台WebService服务器，客户端只是偶尔访问一次，此时的KeepAl...
c++ 代码提升权限，请求管理员身份运行权限 - 脚本技术 - 清泛IT社区，为创...
...CreateProcess函数，有时会遇到权限不足失败的情况，那么如何提升执行权限呢？
使用 ShellExecuteEx 函数：
// ------提升权限------
// Initialize the structure.
SHELLEXECUTEINFO sei = { siz...
将Genymotion模拟器与App Inventor一起使用 · App Inventor 2 中文网
... Android 接口 (ADB) 将通过 USB 接口看到 Genymotion。
以下是如何在 App Inventor 中设置 Genymotion 进行实时开发。
如果您尚未安装 App Inventor 安装软件（请参阅本页的步骤 1），请在您的计算机上安装它。
确保您使用的是...
App Inventor 2 串口组件：App使用OTG数据线进行串口通信 · App Inventor 2 中文网
...：
视频介绍了App Inventor 2 串口组件的使用方法，以及如何利用手机串口与Arduino硬件进行通信。串口通信波特率：9600。英文原版视频如下：
可以看到，手机串口连接时，没有像PC那样指定“COM3”等端口，而是直接使用默认...
App Inventor 2 实现蓝牙未开启时弹窗提醒用户开启蓝牙 · App Inventor 2 中文网
...，给用户带来一定的麻烦及学习成本（可能需要研究一下如何开启等），这时我们可以通过代码块实现弹窗提醒，用户同意后自动开启蓝牙功能。
1、代码如下：
当蓝牙未启用时，会自动弹出交互框，让用户选择启用手...
Stacking Divs from Bottom to Top
...s.
I created a codepen for it.
https://codepen.io/king-dev/pen/PoPgXEg
.root {
transform: scaleY(-1);
}
.root > div {
transform: scaleY(-1);
}
The idea is to flip the root first horizontally and then flip direct children divs again.
NOTE: the above method also reverses the order of divs...
Find location of a removable SD card
...ally 'contact the manufacturer'. Not useful.
– dragonroot
Mar 15 '12 at 2:05
6
The last part of t...
Lost httpd.conf file located apache [closed]
..._CONFIG_FILE="apache2.conf" You can run "/usr/sbin/apache2 -V | grep HTTPD_ROOT" to find the root. Output: "-D HTTPD_ROOT="/etc/apache2/apache2.conf" The absolute path will be then : "/etc/apache2/apache2.conf"
– Mayank Jaiswal
Oct 27 '13 at 14:56
...
Build fat static library (device + simulator) using Xcode and SDK 4+
...public headers (courtesy of Frederik Wallner)
Added explicit setting of SYMROOT (maybe need OBJROOT to be set too?), thanks to Doug Dickinson
SCRIPT (this is what you have to copy/paste)
For usage / install instructions, see below
##########################################
#
# c.f. https://sta...
Eclipse: All my projects disappeared from Project Explorer
...->Import
General->Existing Projects into Workspace
Click the "Select root directory" field and browse to each subfolder in your workspace folder, and import.
For me, this was very tedious, since I had several dozen projects in my workspace, but it's the only solution I found short of restori...