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Change UICollectionViewCell size on different device orientations

... 1) You could maintain and swap out multiple layout objects, but there's a simpler way. Just add the following to your UICollectionViewController subclass and adjust the sizes as required: - (CGSize)collectionView:(UICollectionView *)collectionVie...
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What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?

...ed on the names, but what specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX? 4 Answers ...
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Difference between addSubview and insertSubview in UIView class

What is the difference between addSubview and insertSubView methods when a view is added programmatically? 4 Answers ...
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Can existing virtualenv be upgraded gracefully?

I have a virtualenv created for Python 2.5 and want to "upgrade" it to Python 2.6. 5 Answers ...
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C++ semantics of `static const` vs `const`

...le scope, no difference in C++. const makes internal linkage the default, and all global variables have static lifetime. But the first variant has the same behavior in C, so that may be a good reason to use it. Within a function, the second version can be computed from parameters. In C or C++ it ...
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Group by multiple columns in dplyr, using string vector input

I'm trying to transfer my understanding of plyr into dplyr, but I can't figure out how to group by multiple columns. 9 Answ...
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Elegant setup of Python logging in Django

...ust depends on your requirements. The key thing is that I usually add the handlers I want to the root logger, using levels and sometimes logging.Filters to get the events I want to the appropriate files, console, syslogs etc. You can of course add handlers to any other loggers too, but there isn't c...
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Creating a dictionary from a csv file?

...ary from a csv file. The first column of the csv file contains unique keys and the second column contains values. Each row of the csv file represents a unique key, value pair within the dictionary. I tried to use the csv.DictReader and csv.DictWriter classes, but I could only figure out how to g...
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LINQ where vs takewhile

... TakeWhile stops when the condition is false, Where continues and find all elements matching the condition var intList = new int[] { 1, 2, 3, 4, 5, -1, -2 }; Console.WriteLine("Where"); foreach (var i in intList.Where(x => x <= 3)) Console.WriteLine(i); Console.WriteLine("Take...
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git cherry-pick says “…38c74d is a merge but no -m option was given”

I made some changes in my master branch and want to bring those upstream. when I cherry-pick the following commits however I get stuck on fd9f578 where git says: ...