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Why are dates calculated from January 1st, 1970?

... Astronomers use their own epochal date: http://en.wikipedia.org/wiki/Epoch_(astronomy) Why? A date has to be chosen to make the math work out. Any random date will work. A date far in the past avoids negative numbers for the general case. Some of the smarter packages use the proleptic Gregoria...
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How do I get the entity that represents the current user in Symfony2?

...* * @var Security */ private $security; public function __construct(Security $security) { $this->security = $security; } public function privatePage() : Response { $user = $this->security->getUser(); // null or UserInterface, if logged in ...
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How does Apple know you are using private API?

...ist all linked symbols. This can detect Undocumented C functions such as _UIImageWithName; Objective-C classes such as UIProgressHUD Ivars such as UITouch._phase (which could be the cause of rejection of Three20-based apps last few months.) 3. Listing Objective-C selectors, or strings Objective...
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How do I speed up the gwt compiler?

...ur gwt.xml: <define-property name="user.agent" values="ie6,gecko,gecko1_8"></define-property> or in gwt 2.x syntax, and for one browser only: <set-property name="user.agent" value="gecko1_8"/> This, for example, will compile your application for IE and FF only. If you know yo...
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How can I clone an SQL Server database on the same server in SQL Server 2008 Express?

... Version 2012 Click download button and check ENU\x64\SQLManagementStudio_x64_ENU.exe Version 2014 Click download button and check MgmtStudio 64BIT\SQLManagementStudio_x64_ENU.exe Open Microsoft SQL Management Studio. Backup original database to .BAK file (db -> Task -> Backup). Create em...
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How to search for a part of a word with ElasticSearch

... nGram just as a filter. Here is my setup: { "index": { "index": "my_idx", "type": "my_type", "analysis": { "index_analyzer": { "my_index_analyzer": { "type": "custom", "tokenizer": "standard", "filter": [ "lowercase", ...
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LINQ - Full Outer Join

...roper Expression<Func<>>. I supposed I could replace them with _, __, ___ instead, but that doesn't seem any clearer until C# has a proper parameter wildcard to use instead. – NetMage Jul 7 '17 at 23:23 ...
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Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?

...ic class DependencyRegistrarModule : IHttpModule { private static bool _dependenciesRegistered; private static readonly object Lock = new object(); public void Init(HttpApplication context) { context.BeginRequest += (sender, args) => EnsureDependenciesRegistered(); } ...
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Get the (last part of) current directory name in C#

...the last part of current directory, for example from /Users/smcho/filegen_from_directory/AIRPassthrough , I need to get AIRPassthrough . ...
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What happens to an open file handle on Linux if the pointed file gets moved or deleted

...-1 is returned, and errno is set * appropriately. */ int check_fd_fine(int fd) { struct stat _stat; int ret = -1; if(!fcntl(fd, F_GETFL)) { if(!fstat(fd, &_stat)) { if(_stat.st_nlink >= 1) ret = 0; else p...