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Doctrine and composite unique keys

...html So the original example could look something like this: /** * @var string $videoDimension * * @ORM\Id @ORM\Column(type="string") */ private $videoDimension; /** * @var string $videoBitrate * * @ORM\Id @ORM\Column(type="string") */ private $videoBitrate; A few notes here: Column "...
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Why should I use 'li' instead of 'div'?

... By using semantically correct markup, you are embedding extra information in your text. By using ul/li you are communicating to the consuming application that the information is a list, and not just "something" (who knows what) that is some text inside an arbitrary element. ...
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Converting Long to Date in Java returns 1970

...will be done on the java.time classes and their extensions in the ThreeTen-Extra project. The java-time framework is defined by JSR 310 and built into Java 8 and later. The java.time classes have been back-ported to Java 6 & 7 on the ThreeTen-Backport project and to Android in the ThreeTenABP pr...
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jQuery scroll() detect when user stops scrolling

...se it like any other on or bind-event handler, except that you can pass an extra parameter as a last: $(window).on('scroll', function(e) { console.log(e.type + '-event was 250ms not triggered'); }, 250); http://yckart.github.com/jquery.unevent.js/ (this demo uses resize instead of scroll, bu...
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Center a column using Twitter Bootstrap 3

...s Bootstrap's own offset classes so it requires no change in markup and no extra CSS. The key is to set an offset equal to half of the remaining size of the row. So for example, a column of size 2 would be centered by adding an offset of 5, that's (12-2)/2. In markup this would look like: <div ...
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List of Big-O for PHP functions

...fred', $a) will return true while isset($['fred']) will return false. This extra step is non-trivial and will greatly increase execution time. – orca Jan 29 '13 at 19:16 ...
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Text-align class for inside a table

...gt; <p class="text-xl-left">Left aligned text on viewports sized XL (extra-large) or wider.</p> share | improve this answer | follow | ...
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Send POST request using NSURLSession

...configuration delegate:self delegateQueue:nil]; NSURL *url = [NSURL URLWithString:@"[JSON SERVER"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy ...
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“is” operator behaves unexpectedly with integers

... This can be a very fast check relative to say, checking if two very long strings are equal in value. But since it applies to the uniqueness of the object, we thus have limited use-cases for it. In fact, we mostly want to use it to check for None, which is a singleton (a sole instance existing in o...
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Keep file in a Git repo, but don't track changes

...ne a path that is marked as assume-unchanged has changed without incurring extra lstat(2) cost, it reserves the right to report that the path has been modified (as a result, "git commit -a" is free to commit that change)." In other words, assume-unchanged is just for local performance issues. If Git...