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Facebook Open Graph not clearing cache

... function(response){ console.log(response); } ); // with "vanilla" javascript var fbxhr = new XMLHttpRequest(); fbxhr.open("POST", "https://graph.facebook.com", true); fbxhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); fbxhr.send("id=<?php echo $url; ?&gt...
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Git - Undo pushed commits

I have a project in a remote repository, synchronized with a local repository (development) and the server one (prod). I've been making some commited changes already pushed to remote and pulled from the server. Now, I want to undo those changes. So I could just git checkout to the commit before th...
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Regular expression for matching HH:MM time format

I want a regexp for matching time in HH:MM format. Here's what I have, and it works: 19 Answers ...
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Default html form focus without JavaScript

Is it possible to set the default input focus on an HTML form without using JavaScript, for example: 5 Answers ...
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]

... Update: The final Scala 2.8 release has a mechanism like the one I described. If you look up BitSet in the scaladocs you find: def map [B] (f: (Int) ⇒ B) : BitSet[B] [use case] Builds a new collection by applying a function to all elements of this bitset. ...
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What is the ideal data type to use when storing latitude / longitude in a MySQL database?

... @TheSexiestManinJamaica - Before IEEE 754-1985, computer floating-point hardware was chaotic. There was even on machine where a*b was not equal b*a (for some values). There were many examples somewhat like: 2+2 = 3.9999. The standard ...
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The performance impact of using instanceof in Java

... I don't think this measures anything meaningful at all. The code measures using System.currentTimeMillis() on an operation that is not much more than a single method call, which should give much to low precision. Use a benchmark framework such as JMH instead! ...
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Check if user is using IE

... answered Mar 21 '14 at 5:59 Daniel TononDaniel Tonon 6,97022 gold badges4444 silver badges4343 bronze badges ...
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Fast and Lean PDF Viewer for iPhone / iPad / iOS - tips and hints?

...mIndex = indexPath.row; [self presentModalViewController:previewController animated:YES]; [previewController release]; share | improve this answer | follow | ...
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How to use LocalBroadcastManager?

...his observer is bound to the Lifecycle object associated with the owner, meaning: If the Lifecycle object is not in an active state, then the observer isn't called even if the value changes. After the Lifecycle object is destroyed, the observer is automatically removed The fact that LiveData obj...