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Show AlertDialog in any position of the screen

...der = new AlertDialog.Builder(this); builder.setItems(items, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int item) { if(item == 0) { } else if(item == 1) { } else if(item == 2) { } } }...
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Why is Scala's immutable Set not covariant in its type?

... is (Any) => Boolean, while the type of Set(1,2,3).contains _ is res1: (Int) => Boolean. – Seth Tisue Jun 27 '11 at 1:31 ...
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Creating a zero-filled pandas data frame

... Note that you may run into int/float issue if you will be doing something like d.set_value(params) after initializing d to contain 0's. An easy fix is: d = pd.DataFrame(0.0, index=np.arange(len(data)), columns=feature_list). –...
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What are five things you hate about your favorite language? [closed]

... functions. No type inference. Lack of sane defaults in eg graphics. NullPointerException not containing more information about what is null. The proliferation of pointlessly "configurable" frameworks/service provider interfaces/factory classes/dependency injection systems. The configurability is al...
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Why should a function have only one exit-point? [closed]

I've always heard about a single exit-point function as a bad way to code because you lose readability and efficiency. I've never heard anybody argue the other side. ...
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What happens if a Android Service is started multiple times?

...call StartService(); again, then only onStartCommand() gets called and new Intent is passed to onStartCommand() method. Note: onCreate() is not called again. About calling bindService() multiple times: When you call bindService() multiple times, then again only one instance is used for Service an...
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log4net vs. Nlog

...e Library for a few days. Came back 3-4 weeks later and put them together into a cohesive demo. Hopefully some of this is useful to you. My recommendation for our project is this: Use a logging facade (e.g. Common.Logging, SimpleLoggingFacade) to avoid direct dependencies. If we end up using En...
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getSupportActionBar from inside of Fragment ActionBarCompat

... While this question has an accepted answer already, I must point out that it isn't totally correct: calling getSupportActionBar() from Fragment.onAttach() will cause a NullPointerException when the activity is rotated. Short answer: Use ((ActionBarActivity)getActivity()).getSupportA...
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How to delete a word and go into insert mode in Vim?

... could perhaps use the key sequence bdwi to delete the current word and go into INSERT mode. share | improve this answer | follow | ...
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Encapsulation vs Abstraction?

...ulate their state and hide it from the outside; outside users of the class interact with it through its methods, but cannot access the classes state directly. So the class abstracts away the implementation details related to its state. Abstraction is a more generic term, it can also be achieved by ...