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Is there a way to detect if an image is blurry?

I was wondering if there is a way to determine if an image is blurry or not by analyzing the image data. 12 Answers ...
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Inline elements shifting when made bold on hover

I created a horizontal menu using a HTML lists and CSS. Everything works as it should except when you hover over the links. You see, I created a bold hover state for the links, and now the menu links shift because of the bold size difference. ...
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UITableView - scroll to the top

In my table view I have to scroll to the top. But I cannot guarantee that the first object is going to be section 0, row 0. May be that my table view will start from section number 5. ...
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What are Vertex Array Objects?

I am just starting to learn OpenGL today from this tutorial: http://openglbook.com/the-book/ I got to chapter 2, where I draw a triangle, and I understand everything except VAOs (is this acronym OK?). The tutorial has this code: ...
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Minimizing NExpectation for a custom distribution in Mathematica

This relates to an earlier question from back in June: 1 Answer 1 ...
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How to filter Pandas dataframe using 'in' and 'not in' like in SQL

How can I achieve the equivalents of SQL's IN and NOT IN ? 9 Answers 9 ...
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“f” after number

What does the f after the numbers indicate? Is this from C or Objective-C? Is there any difference in not adding this to a constant number? ...
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What is the difference between quiet NaN and signaling NaN?

I have read about floating-point and I understand that NaN could result from operations. But I can't understand what these are concepts exactly. What is the difference between them? ...
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How does this CSS produce a circle?

... 5 Answers 5 Active ...
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Java: parse int value from a char

I just want to know if there's a better solution to parse a number from a character in a string (assuming that we know that the character at index n is a number). ...