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App Inventor 2 拓展参考文档 · App Inventor 2 中文网

...对焦等高级功能 【二维码】QRCode 扩展:二维码扫描及生成方案都在这里 【分贝测量】SoundPressureLevel 拓展:通过麦克风测量声压级别并返回以分贝为单位的数据 【音调测量】SoundAnalysis 拓展:通过麦克风测量声音的音调高...
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How to fix: Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its

...n MVC 3 project to work on a local install of IIS and came across the following 500 error: 19 Answers ...
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How to detect if CMD is running as Administrator/has elevated privileges?

... ADDENDUM: For Windows 8 this will not work; see this excellent answer instead. Found this solution here: http://www.robvanderwoude.com/clevertricks.php AT > NUL IF %ERRORLEVEL% EQU 0 ( ECHO you are Administrator ) ELSE ( ECH...
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Environment variable to control java.io.tmpdir?

...nd prior. It isn't reassuring that there's a way to do this other than on Windows. On Windows, OpenJDK's get_temp_directory() function makes a Win32 API call to GetTempPath(); this is how on Windows, Java reflects the value of the TMP environment variable. On Linux and Solaris, the same get_temp_...
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Export Data from mysql Workbench 6.0

I'm trying to export my database, using MySQL Workbench 6.0 on Windows, to send to my db instance in Amazon RDS, but i'm getting this error: ...
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Getting the thread ID from a thread

...hread.CurrentThread.ManagedThreadId won't work at least when using in a SetWindowsHookEx. Instead we have to get the thread id from the native win32 function GetCurrentThreadId(). – King King Jul 19 '13 at 22:06 ...
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tmux set -g mouse-mode on doesn't work

...ns for: - mouse-resize-pane - mouse-select-pane - mouse-select-window - mode-mouse Instead there is just one option: 'mouse' which turns on mouse support So this is what I'm using now in my .tmux.conf file set -g mouse on ...
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How to check if a string “StartsWith” another string?

...ual measurements. On the browser I'm running currently (Chrome 12.0.742 on Windows) substring wins for success and prepared regex wins for failure. – cobbal Jul 14 '11 at 17:11 4 ...
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Composer Warning: openssl extension is missing. How to enable in WAMP

Trying to install Composer dependency management tool on Win7/64 + WampServer 2.2 via the Setup Installer and I am getting the following message: ...
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浅谈HTML5 & CSS3的新交互特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...而HTML5允许你直接在网页上进行绘图,甚至允许你与网页生成更多的交互,例如绘制图形、放大缩小,等等。图例是一个用HTML5制作的小游戏。 5. 地理(Geolocation) API HTML5提供了地理信息的应用接口 Geolocation API。通过这个API,网...