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How to position a div in the middle of the screen when the page is bigger than the screen

Hi I'm using something similiar to the following to get a div positioned in the middle of the screen: 16 Answers ...
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Select by partial string from a pandas DataFrame

I have a DataFrame with 4 columns of which 2 contain string values. I was wondering if there was a way to select rows based on a partial string match against a particular column? ...
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How can I ensure that a division of integers is always rounded up?

I want to ensure that a division of integers is always rounded up if necessary. Is there a better way than this? There is a lot of casting going on. :-) ...
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Efficient way to insert a number into a sorted array of numbers?

I have a sorted JavaScript array, and want to insert one more item into the array such the resulting array remains sorted. I could certainly implement a simple quicksort-style insertion function: ...
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What's the main difference between int.Parse() and Convert.ToInt32

... 13 Answers 13 Active ...
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Global access to Rake DSL methods is deprecated

I am working through the Ruby on Rails 3 tutorial book and typed the following on the command line: 5 Answers ...
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How to specify a min but no max decimal using the range data annotation attribute?

I would like to specify that a decimal field for a price must be >= 0 but I don't really want to impose a max value. 10 Ans...
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CGContextDrawImage draws image upside down when passed UIImage.CGImage

Does anyone know why CGContextDrawImage would be drawing my image upside down? I am loading an image in from my application: ...
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What is the default value for enum variable?

An enum variable, anyone know if it is always defaulting to the first element? 2 Answers ...
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In-Place Radix Sort

This is a long text. Please bear with me. Boiled down, the question is: Is there a workable in-place radix sort algorithm ? ...