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UITapGestureRecognizer - single tap and double tap

...am trying to add 2 UITapGestureRecognizers to a view, one for single tap and one for double tap events. The single tap recognizer is working as expected (on its own). But I don't seem to be able to get the double tap recognizer working. ...
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Understanding garbage collection in .NET

... You are being tripped up here and drawing very wrong conclusions because you are using a debugger. You'll need to run your code the way it runs on your user's machine. Switch to the Release build first with Build + Configuration manager, change the "Act...
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How to resume Fragment from BackStack if exists

...asier since it shouldn't require keeping track of a number that may change and reinforces the "unique back stack entry" logic. Since you want only one back stack entry per Fragment, make the back state name the Fragment's class name (via getClass().getName()). Then when replacing a Fragment, use th...
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How exactly does tail recursion work?

I almost understand how tail recursion works and the difference between it and a normal recursion. I only don't understand why it doesn't require stack to remember its return address. ...
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Generic htaccess redirect www to non-www

...th the double slashes. So I did RewriteRule ^(.*)$ http://%1$1 [R=301,L] and it seems to be working so far – bobfet1 Mar 22 '12 at 13:59 ...
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`staticmethod` and `abc.abstractmethod`: Will it blend?

In my Python app I want to make a method that is both a staticmethod and an abc.abstractmethod . How do I do this? 4 Ans...
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple

Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
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How to detect if JavaScript is disabled?

...ection. As an alternative it is possible to set a cookie using JavaScript, and then test for that cookie using server-side scripting upon subsequent page views. However this would not be suitable for deciding what content to deliver as it would not be able to distinguish visitors without the cookie...
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PowerShell says “execution of scripts is disabled on this system.”

... If you're using Windows Server 2008 R2 then there is an x64 and x86 version of PowerShell both of which have to have their execution policies set. Did you set the execution policy on both hosts? As an Administrator, you can set the execution policy by typing this into your PowerShell...
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How to list all functions in a Python module?

I have a python module installed on my system and I'd like to be able to see what functions/classes/methods are available in it. ...