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Are static class instances unique to a request or a server in ASP.NET?

... classes and static instance fields are shared between all requests to the application, and has the same lifetime as the application domain. Therefore, you should be careful when using static instances, since you might have synchronization issues and the like. Also bear in mind, that static instanc...
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How to prevent multiple instances of an Activity when it is launched with different Intents

I've come across a bug in my application when it is launched using the "Open" button on the Google Play Store app (previously called Android Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leadi...
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Assign width to half available screen width declaratively

...tend to use it as a filler. layout_width="0dp" is actually the recommended approach according to Android documentation. – Muz Oct 10 '13 at 10:02 ...
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No route matches [GET] /assets

I have a Rails app that I'm trying to test in the production environment. I ran RAILS_ENV=production rake assets:precompile which generated all of my assets in /public/assets. The problem is that when I start my app w/ RAILS_ENV=production rails s thin I get: ...
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How to update PATH variable permanently from Windows command line?

...INGCHANGE message with lParam set to the string "Environment". This allows applications, such as the shell, to pick up your updates. Note that your application will need elevated admin rights in order to be able to modify this key. You indicate in the comments that you would be happy to modify ju...
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AngularJS : Where to use promises?

...ookForAuthentication accepts a callback for failure and success, but what happens when FB.login succeeds but FB.api fails? This method always invokes the success callback regardless of the result of the FB.api method. Now imagine that you're trying to code a robust sequence of three or more asyn...
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How to enable/disable bluetooth programmatically in android

... permission to turn on Bluetooth. The enable() method is provided only for applications that include a user interface for changing system settings, such as a "power manager" app. What does it mean? For ex. I made a little app from your code and it worked. But if I want to upload to Play Store, it wo...
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APP INVENTOR硬件交互学习教程06——硬件参数上报 - 创客硬件开发 - 清泛IT...

...硬件参数上报,板子接收到指令,执行后反馈一个状态给APP。 1.界面组件 增加两个标签,一个布局,一个文本输入框 2.程序逻辑 增加接收处理和显示判断 3.arduino nano代码 // 引脚定义 const int ledPin1 =  5;// the numb...
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App Inventor 2 其他参考资料 · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 App Inve...
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Conditionally start at different places in storyboard from AppDelegate

...ontroller if the authentication failed. Basically, I want to do this in my AppDelegate: 10 Answers ...