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How to customize the background/border colors of a grouped table view cell?

...later UITableViewCell now has a backgroundColor property that makes this really easy (especially in combination with the [UIColor colorWithPatternImage:] initializer). But I'll leave the 2.0 version of the answer here for anyone that needs it… It's harder than it really should be. Here's how I ...
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How to open a URL in a new Tab using JavaScript or jQuery? [duplicate]

How to open a URL in new tab instead of new window programatically? 6 Answers 6 ...
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python multithreading wait till all threads finished

...oin method of Thread object in the end of the script. t1 = Thread(target=call_script, args=(scriptA + argumentsA)) t2 = Thread(target=call_script, args=(scriptA + argumentsB)) t3 = Thread(target=call_script, args=(scriptA + argumentsC)) t1.start() t2.start() t3.start() t1.join() t2.join() t3.join...
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What's the difference between using CGFloat and float?

I tend to use CGFloat all over the place, but I wonder if I get a senseless "performance hit" with this. CGFloat seems to be something "heavier" than float, right? At which points should I use CGFloat, and what makes really the difference? ...
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Function return value in PowerShell

... PowerShell has really wacky return semantics - at least when viewed from a more traditional programming perspective. There are two main ideas to wrap your head around: All output is captured, and returned The return keyword really just indi...
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What is Bit Masking?

... the b to indicate binary literal is not supported by all compilers, correct? – Ungeheuer May 8 '17 at 23:37 ...
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Counting inversions in an array

...m to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find the number of inversions...
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Javascript equivalent of Python's zip function

..., unlike Python's version where the argument list is variadic. If you want all of these "features", see below. It takes just about 2 extra lines of code. The following will mimic Python's zip behavior on edge cases where the arrays are not of equal size, silently pretending the longer parts of arra...
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How do I copy items from list to list without foreach?

... It works with all types, as long as lstStudentClass is an IEnumerable<StudentClass>, it will work. If you experience otherwise you need to provide more information. – Lasse V. Karlsen Apr 3 '15 ...
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Python nested functions variable scoping [duplicate]

I've read almost all the other questions about the topic, but my code still doesn't work. 10 Answers ...