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Get the current displaying UIViewController on the screen in AppDelegate.m

...oller: UIViewController *vc = self.window.rootViewController; Once you know the root view controller, then it depends on how you have built your UI, but you can possibly find out a way to navigate through the controllers hierarchy. If you give some more details about the way you defined your app...
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Why is Swift compile time so slow?

...le file (actually one method) that was causing the compiler to go berzek. Now don't get me wrong. Swift does recompile all your files each time, but the great thing now, is that Apple added real-time compilation feedback over the files it compiles, so Xcode 6 GM now shows which Swift files are bein...
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Using Caps Lock as Esc in Mac OS X

... Edit: As described in this answer, newer versions of MacOS now have native support for rebinding Caps Lock to Escape. Thus it is no longer necessary to install third-party software to achieve this. Here's my attempt at a comprehensive, visual walk-through answer (with links) of ho...
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Explain how finding cycle start node in cycle linked list work?

...he loop length. After mu additional steps past the meeting point, you are now at X_(i + mu). But we have shown that X_(i + mu) = X_(mu + i) = X_mu, because of this special property of i, so mu steps past the meeting point must take you to X_mu, the start of the cycle. Basically modular arithmetic,...
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Difference between WAIT and BLOCKED thread states

... Assume there is only one thread and waited on some time in millis; now Is it possible a thread can directly from waiting state to go to runnable state? since no other thread takes lock here since only single threaded? – Kanagavelu Sugumar Jun 15 '16 at ...
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Multiline strings in VB.NET

...duced in Visual Basic 14 (in Visual Studio 2015). The above example can be now written as: Dim s As String = "Hello World & Space" MSDN article isn't updated yet (as of 2015-08-01), so check some answers below for details. Details are added to the Roslyn New-Language-Features-in-VB-14 Github ...
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How can I create download link in HTML?

... This answer is outdated. We now have the download attribute. (see also this link to MDN) If by "the download link" you mean a link to a file to download, use <a href="http://example.com/files/myfile.pdf" target="_blank">Download</a> t...
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“where 1=1” statement [duplicate]

... Awesome. Now I can build my complex queries with strings rather than arrays ;). I did, however, want to verify with an EXPLAIN query whether it triggered "Using Where." Indeed, it does not. – landons ...
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Set CSS property in Javascript?

...rst line had single quotes as I copied it from the OPs question. Corrected now anyway. – djdd87 Mar 4 '11 at 15:04 1 ...
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How to increment a datetime by one day?

... accomplished using timedelta objects: import datetime datetime.datetime.now() + datetime.timedelta(days=1) Look up timedelta objects in the Python docs: http://docs.python.org/library/datetime.html share | ...