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Android phone orientation overview including compass

I've been trying to get my head around the Android orientation sensors for a while. I thought I understood it. Then I realised I didn't. Now I think (hope) I have a better feeling for it again but I am still not 100%. I will try and explain my patchy understanding of it and hopefully people will be ...
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How to convert Nonetype to int or string?

I've got an Nonetype value x , it's generally a number, but could be None . I want to divide it by a number, but Python raises: ...
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How to do version numbers? [closed]

My company is building a product. It's going to be versioned by SVN. It's a webapp so basically there will never be a version out which doesn't have some features in them and thus could always be labeled as beta. But since it's going to be a corporate product I really don't want the "unstable watcho...
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New Array from Index Range Swift

How can I do something like this? Take the first n elements from an array: 5 Answers 5...
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What characters are valid for JavaScript variable names?

Which characters can be used for naming a JavaScript variable? 12 Answers 12 ...
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Android emulator-5554 offline

I'm having a problem with emulator-5554, it keeps telling me it is offline. 37 Answers ...
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Deleting an element from an array in PHP

Is there an easy way to delete an element from an array using PHP, such that foreach ($array) no longer includes that element? ...
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Why is isNaN(null) == false in JS?

This code in JS gives me a popup saying "i think null is a number", which I find slightly disturbing. What am I missing? 8 ...
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How to format a Java string with leading zero?

Here is the String, for example: 21 Answers 21 ...
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Efficient way to determine number of digits in an integer

What is a very efficient way of determining how many digits there are in an integer in C++? 28 Answers ...