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Dialog throwing "Unable to add window — token null is not for an application” with getApplication()

My Activity is trying to create an AlertDialog which requires a Context as a parameter. This works as expected if I use: 28...
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C# if/then directives for debug vs release

In Solution properties, I have Configuration set to "release" for my one and only project. 15 Answers ...
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What are the barriers to understanding pointers and what can be done to overcome them? [closed]

Why are pointers such a leading factor of confusion for many new, and even old, college level students in C or C++? Are there any tools or thought processes that helped you understand how pointers work at the variable, function, and beyond level? ...
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How do I associate a Vagrant project directory with an existing VirtualBox VM?

Somehow my Vagrant project has disassociated itself from its VirtualBox VM, so that when I vagrant up Vagrant will import the base-box and create a new virtual machine. ...
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How do I pass command line arguments to a Node.js program?

I have a web server written in Node.js and I would like to launch with a specific folder. I'm not sure how to access arguments in JavaScript. I'm running node like this: ...
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ssh “permissions are too open” error

I had a problem with my mac where I couldn't save any kind of file on the disk anymore. I had to reboot OSX lion and reset the permissions on files and acls. ...
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How do I capitalize first letter of first name and last name in C#?

Is there an easy way to capitalize the first letter of a string and lower the rest of it? Is there a built in method or do I need to make my own? ...
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Easiest way to toggle 2 classes in jQuery

If I have class .A and class .B and want to switch in between on button click, what's a nice solution for that in jQuery? I still don't understand how toggleClass() works. ...
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How do I find an element that contains specific text in Selenium Webdriver (Python)?

I'm trying to test a complicated javascript interface with Selenium (using the Python interface, and across multiple browsers). I have a number of buttons of the form: ...
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Pass an array of integers to ASP.NET Web API?

I have an ASP.NET Web API (version 4) REST service where I need to pass an array of integers. 16 Answers ...