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Expand/collapse section in UITableView in iOS

Could somebody tell me the way to perform UITableView expandable/collapsible animations in sections of UITableView as below? ...
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Android Spinner : Avoid onItemSelected calls during initialization

I created an Android application with a Spinner and a TextView . I want to display the selected item from the Spinner's drop down list in the TextView. I implemented the Spinner in the onCreate method so when I'm running the program, it shows a value in the TextView (before selecting an item ...
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How do I install from a local cache with pip?

I install a lot of the same packages in different virtualenv environments. Is there a way that I can download a package once and then have pip install from a local cache? ...
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Admob Error in Eclipse for android:configChanges

Eclipse is giving me an error on the android:configChanges line in my AndroidManifest.xml: 7 Answers ...
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Xcode suddenly stopped running project on hardware: “Could not launch xxx.app: .. No such file..” [c

Xcode has stopped being able to run my app, it started directly after I deleted it from the device and attempted to re-install by rerunning it in Xcode (something I've done hundreds of times before). ...
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How to load a UIView using a nib file created with Interface Builder

I'm trying to do something a bit elaborate, but something that should be possible. So here is a challenge for all you experts out there (this forum is a pack of a lot of you guys :) ). ...
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How do I create an empty array/matrix in NumPy?

I can't figure out how to use an array or matrix in the way that I would normally use a list. I want to create an empty array (or matrix) and then add one column (or row) to it at a time. ...
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What causes java.lang.IncompatibleClassChangeError?

I'm packaging a Java library as a JAR, and it's throwing many java.lang.IncompatibleClassChangeError s when I try to invoke methods from it. These errors seem to appear at random. What kinds of problems could be causing this error? ...
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Use ASP.NET MVC validation with jquery ajax?

I have simple ASP.NET MVC action like this : 5 Answers 5 ...
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How to get the return value from a thread in python?

The function foo below returns a string 'foo' . How can I get the value 'foo' which is returned from the thread's target? ...