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What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?

I was trying to change my default/main/startup (whatever you call it) activity by editing the androidmanifest.xml file. All i did was change the android:name property. however, this completely broke the entire app. when I try to install it fails and reads. ...
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How to make a JSONP request from Javascript without JQuery?

Can I make a cross-domain JSONP request in JavaScript without using jQuery or other external library? I would like to use JavaScript itself and then parse the data and make it an object so I could use it. Do I have to use an external library? If not, how can I do it? ...
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mongoose vs mongodb (nodejs modules/extensions), which better? and why?

I've just arrived to Node.js and see that there are many libs to use with the MongoDB, the most popular seem to be these two: (mongoose and mongodb). Can I get pros and cons of those extensions? Are there better alternatives to these two? ...
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Detecting iOS / Android Operating system

I've done some research, and this question has come up, but not in the way I intend. I'm building a page for a client that is a QR code landing, which is a place to download an application. So he doesn't have to print out 2 QR codes on a page, I'd like to detect the current operating system (Apple...
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Avoiding if statement inside a for loop?

I have a class called Writer that has a function writeVector like so: 4 Answers 4 ...
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How to update a menu item shown in the ActionBar?

I have an Activity that has 2 fragments. Both are ListFragments and both contribute MenuItems to the Menu. I have one MenuItem that I've set the attribute android:showAsAction to have it show as a button on the ActionBar. Which works fine. ...
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Visual Studio Solutions Folder as real Folders

I have a Visual Studio Solution. Currently, it is an empty solution (=no projects) and I have added a few solution folders. ...
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Does Java 8 provide a good way to repeat a value or function?

In many other languages, eg. Haskell, it is easy to repeat a value or function multiple times, eg. to get a list of 8 copies of the value 1: ...
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How are POST and GET variables handled in Python?

In PHP you can just use $_POST for POST and $_GET for GET (Query string) variables. What's the equivalent in Python? 6 ...
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“Remote System Explorer Operation” causing freeze for couple of seconds

I observe "Remote System Explorer Operation" in Progress view of Eclipse after each save of Java file (so it might be related to compiling?). It makes the Eclipse unusable for 1 to 10 seconds. In some projects (of about the same size) it's quicker, in some it's slower. ...