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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
I have looked at this question but still don't understand the difference between Iterable and Traversable traits. Can someone explain ?
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UICollectionView Set number of columns
I just started learning about UICollectionViews. I'm wondering if anyone knows how to specify the number of columns in a collectionview. The default is set to 3 (iPhone/portrait). I've looked at the documentation and can't seem to find a concise answer.
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Java 8 Streams - collect vs reduce
When would you use collect() vs reduce() ? Does anyone have good, concrete examples of when it's definitely better to go one way or the other?
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How do you specify the date format used when JAXB marshals xsd:dateTime?
When JAXB marshals a date object ( XMLGregorianCalendar ) into an xsd:dateTime element. How can you specify the format of the resulting XML?
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Adding a regression line on a ggplot
I'm trying hard to add a regression line on a ggplot. I first tried with abline but I didn't manage to make it work. Then I tried this...
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URL-parameters and logic in Django class-based views (TemplateView)
It is unclear to me how it is best to access URL-parameters in class-based-views in Django 1.5.
5 Answers
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Soft wrap at 80 characters in Vim in window of arbitrary width
I want to use Vim's soft wrap capability ( :set wrap ) to wrap some code at 80 characters, regardless of my actual window width.
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Forward declaring an enum in C++
I'm trying to do something like the following:
17 Answers
17
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Parallel.ForEach vs Task.Run and Task.WhenAll
What are the differences between using Parallel.ForEach or Task.Run() to start a set of tasks asynchronously?
4 Answers
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Explaining Apache ZooKeeper
I am trying to understand ZooKeeper, how it works and what it does. Is there any application which is comparable to ZooKeeper?
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