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Which concurrent Queue implementation should I use in Java?

... a lot of producers producing at the exact same moment. But the consumer side is more complicated because poll won't go into a nice sleep state. You have to handle that yourself. share | improve t...
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Use CSS3 transitions with gradient backgrounds

...ckground-size:1px 200px; border-radius: 10px; border: 1px solid #839DB0; cursor:pointer; width: 150px; height: 100px; } #DemoGradient:Hover{ background-position:100px; } <div id="DemoGradient"></div> ...
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Why is rbindlist “better” than rbind?

...get in a muddle of rownames using do.call(rbind, list(...)) see How to avoid renaming of rows when using rbind inside do.call? Memory efficiency In terms of memory rbindlist is implemented in C, so is memory efficient, it uses setattr to set attributes by reference rbind.data.frame is implemen...
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How to create a density plot in matplotlib?

...you generated with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function: However, if I use the following...
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What is the difference between Pan and Swipe in iOS?

...ber of fingers allowed (minimumNumberOfTouches) has moved enough to be considered a pan. It changes (changed) when a finger moves while at least the minimum number of fingers are pressed down. It ends (ended) when all fingers are lifted. Clients of this class can, in their action methods, query the...
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Adding up BigDecimals using Streams

...into a Stream<BigDecimal> Call the reduce method. 3.1. We supply an identity value for addition, namely BigDecimal.ZERO. 3.2. We specify the BinaryOperator<BigDecimal>, which adds two BigDecimal's, via a method reference BigDecimal::add. Updated answer, after edit I see that you hav...
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Execute and get the output of a shell command in node.js

...ere are some Sync methods natively available, even so IMHO it should be avoided – Renato Gama Oct 17 '12 at 18:55  |  show 4 more comments ...
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Custom attributes in styles.xml

I have created a custom widget, and I'm declaring it in layout.xml. I have also added some custom attributes in attr.xml. However, when trying to declare these attributes in a style in styles.xml, it's giving me No resource found that matches the given name: attr 'custom:attribute'. ...
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Preferred Github workflow for updating a pull request after code review

...fb30112 correct typos and fatal error 58ae094 fixing problem It's a good idea to squash things together so they appear as a single commit: $ git rebase -i parent/master This will prompt you to choose how to rewrite the history of your pull request, the following will be in your editor: pick 5...
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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?

...ment being an rvalue reference and it should not move from it. So why did our code above choose this overload, and not the unordered_map::value_type overload as probably most would expect? Because you, as many other people before, misinterpreted the value_type in the container. The value_typ...