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Easily measure elapsed time

... To run this you have to add the #include <chrono> directive and I would change the reporting time as: std::cout << "Time difference (sec) = " << (std::chrono::duration_cast<std::chrono::microseconds>(end - begin).count()) /1000000.0 <<std::endl; (and do not f...
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How to detect when cancel is clicked on file input?

... While not a direct solution, and also bad in that it only (as far as I've tested) works with onfocus (requiring a pretty limiting event blocking) you can achieve it with the following: document.body.onfocus = function(){ /*rock it*/ } What's nice abou...
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Sorting a vector in descending order

... the numberContainer - a good idea so that someone CAN swap to long long - and write: std::sort(numbers.begin(), numbers.end(), std::greater<numContainer::value_type>()); – RichardHowells May 14 '13 at 19:39 ...
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Printing the value of a variable in SQL Developer

...gt;DBMS Output). Press the "+" button at the top of the Dbms Output window and then select an open database connection in the dialog that opens. In SQL*Plus: SET SERVEROUTPUT ON share | improve...
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Retrieve a Fragment from a ViewPager

...ll no longer work. What about this solution, overriding instantiateItem() and destroyItem() of your Fragment(State)PagerAdapter: public class MyPagerAdapter extends FragmentStatePagerAdapter { SparseArray<Fragment> registeredFragments = new SparseArray<Fragment>(); public MyPa...
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Round a double to 2 decimal places [duplicate]

... too. So, use this instead (Adapted from this answer by Louis Wasserman and this one by Sean Owen.) public static double round(double value, int places) { if (places < 0) throw new IllegalArgumentException(); BigDecimal bd = BigDecimal.valueOf(value); bd = bd.setScale(places, Rou...
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How to determine MIME type of file in android?

... First and foremost, you should consider calling MimeTypeMap#getMimeTypeFromExtension(), like this: // url = file path or whatever suitable URL you want. public static String getMimeType(String url) { String type = null; St...
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Two divs side by side - Fluid display

I am trying to place two divs side by side and using the following CSS for it. 8 Answers ...
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How to install Java 8 on Mac

...ng with the latest JavaFX, which requires Java 8. I'm using IntelliJ 13 CE and Mac OS X 9 Mavericks. I ran Oracle's Java 8 installer, and the files look like they ended up at ...
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HTML 5 strange img always adds 3px margin at bottom [duplicate]

... This problem is caused by the image behaving like a character of text (and so leaving a space below it where the hanging part of a "y" or "g" would go), and is solved by using the vertical-align CSS property to indicate that no such space is needed. Almost any value of vertical-align will do; I...