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Difference between Node object and Element object?
...generic name for any type of object in the DOM hierarchy. A node could be one of the built-in DOM elements such as document or document.body, it could be an HTML tag specified in the HTML such as <input> or <p> or it could be a text node that is created by the system to hold a block of ...
Performance of Java matrix math libraries? [closed]
... was clear that the Java libraries didn't perform too well. However if someone has to code in Java, then the best option is JBLAS. Jama, Colt and Parallel Colt are not fast.
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Why is the use of alloca() not considered good practice?
...ram behaviour is undefined.
Which isn't to say it should never be used. One of the OSS projects I work on uses it extensively, and as long as you're not abusing it (alloca'ing huge values), it's fine. Once you go past the "few hundred bytes" mark, it's time to use malloc and friends, instead. Y...
Large-scale design in Haskell? [closed]
...ional data structures, operate on those structures, then once all work is done, render/flush/serialize out. Keeps most of your code pure
Testing
QuickCheck + Haskell Code Coverage, to ensure you are testing the things you can't check with types.
GHC + RTS is great for seeing if you're spending t...
XPath contains(text(),'some string') doesn't work when used with node with more than one Text subnod
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I know this is an old thread, but can anyone comment on if there is a fundamental difference, preferably with some simple test cases between the answer given by Ken Bloom and //*[contains(., 'ABC')]. I had always used the pattern given by Mike Milkin, thinking it wa...
Run Command Prompt Commands
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Thank you, one more question. Is there a way to hide the the command prompt during this?
– user
Sep 24 '09 at 4:53
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Random number generation in C++11: how to generate, how does it work? [closed]
... determines the entire sequence of "random" numbers, so a) use a different one (e.g. taken from /dev/urandom) each time, and b) store the seed if you wish to recreate a sequence of random choices.
#include <random>
typedef std::mt19937 MyRNG; // the Mersenne Twister with a popular choice of...
Are multiple `.gitignore`s frowned on?
...f several independent projects, it seems it would be simplest to just have one .gitignore file at the root of the repo than various ones throughout. Is there a standard best practice on this or some analysis online of when one approach is better than the other?
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Good examples using java.util.logging [closed]
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java.util.logging keeps you from having to tote one more jar file around with your application, and it works well with a good Formatter.
In general, at the top of every class, you should have:
private static final Logger LOGGER = Logger.getLogger( ClassName.class.getNa...
Random record from MongoDB
...from a collection using the $sample aggregation pipeline operator:
// Get one random document from the mycoll collection.
db.mycoll.aggregate([{ $sample: { size: 1 } }])
If you want to select the random document(s) from a filtered subset of the collection, prepend a $match stage to the pipeline:
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