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Error type 3 Error: Activity class {} does not exist

I have an IntelliJ Android project, that I successfully imported to Android Studio 0.4.0. It works perfectly if I don't change anything in manifest. However, when I want to change the launcher activity and run, it fails with this error: ...
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Classpath including JAR within a JAR

Is it possible to specify a Java classpath that includes a JAR file contained within another JAR file? 13 Answers ...
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What is Rack middleware?

...pplications for lots of use cases, like serving static files or even whole directories. Let's see how we serve a simple file, for example a very basic HTML file located at htmls/index.html: <!DOCTYPE HTML> <html> <head> <title>The Index</title> </head> ...
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How do I increase the cell width of the Jupyter/ipython notebook in my browser?

I would like to increase the width of the ipython notebook in my browser. I have a high-resolution screen, and I would like to expand the cell width/size to make use of this extra space. ...
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How to resolve “Error: bad index – Fatal: index file corrupt” when using Git

...d not work. The solution? For some reason I had others .git folders in sub directories. I delete those .git folders (not the principal) and git reset again. Once they were deleted, everything worked again. share | ...
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How can I use swift in Terminal?

I read What's new in Xcode 6 . The article introduces some new feature about Xcode 6, and it says: 13 Answers ...
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Setting Windows PowerShell environment variables

I have found out that setting the PATH environment variable affects only the old command prompt. PowerShell seems to have different environment settings. How do I change the environment variables for PowerShell (v1)? ...
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Best Practices for Laravel 4 Helpers and Basic Functions?

...dit start/global.php to add app_path().'/libraries' to the ClassLoader::addDirectories( array. Option 2: Edit composer.json to add "app/libraries" to the autoload array. Run composer dump-autoload Call your class and static functions from your views. About your options, quoted from the global.php...
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Strip whitespace from jsp output

How can I strip out extra whitespace from jsp pages' output? Is there a switch I can flip on my web.xml? Is there a Tomcat specific setting? ...
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How to install XNA game studio on Visual Studio 2012?

Is it possible to create XNA games using Visual Studio 2012? 4 Answers 4 ...