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What is Normalisation (or Normalization)?
...ed several places in the database, there is the risk that it is updated in one place but not the other, leading to data corruption.
There is a number of normalization levels from 1. normal form through 5. normal form. Each normal form describes how to get rid of some specific problem, usually rela...
How to close tag properly?
Which one(s) of them is correct?
7 Answers
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Shortcuts in Objective-C to concatenate NSStrings
...for extra temp strings.
Second, use an NSArray to concatenate via the componentsJoinedByString method.
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How do servlets work? Instantiation, sessions, shared variables and multithreading
...ue (1 is 1st, 2 is 2nd, etc). If the same value is specified for more than one servlet, then each of those servlets is loaded in the same order as they appear in the web.xml, web-fragment.xml, or @WebServlet classloading. In the event the "load-on-startup" value is absent, the init() method will be ...
How many double numbers are there between 0.0 and 1.0?
...ve a 52-bit fraction; between any two adjacent powers of two (inclusive of one and exclusive of the next one), there will therefore be 2 to the 52th power different doubles (i.e., 4503599627370496 of them). For example, that's the number of distinct doubles between 0.5 included and 1.0 excluded, an...
Upload failed You need to use a different version code for your APK because you already have one wit
...ered Jul 16 '14 at 4:51
Martin KonecnyMartin Konecny
47.5k1818 gold badges110110 silver badges142142 bronze badges
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How to print the contents of RDD?
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If you want to view the content of a RDD, one way is to use collect():
myRDD.collect().foreach(println)
That's not a good idea, though, when the RDD has billions of lines. Use take() to take just a few to print out:
myRDD.take(n).foreach(println)
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What is the difference between std::array and std::vector? When do you use one over other? [duplicat
... is the difference between std::array and std::vector ? When do you use one over other?
6 Answers
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How is a tag different from a branch in Git? Which should I use, here?
...ing, IMHO. Especially in the way described by tvanfosson, having more than one tag with the same name across different branches could become difficult to maintain. Given the example, I would think that if you could have tags with the same name across different branches, it would quickly be establish...
Find the most common element in a list
...utions proposed, I'm amazed nobody's proposed what I'd consider an obvious one (for non-hashable but comparable elements) -- [itertools.groupby][1]. itertools offers fast, reusable functionality, and lets you delegate some tricky logic to well-tested standard library components. Consider for examp...