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Attach parameter to button.addTarget action in Swift

... You cannot pass custom parameters in addTarget:.One alternative is set the tag property of button and do work based on the tag. button.tag = 5 button.addTarget(self, action: "buttonClicked:", forControlEvents: UIControlEvents.TouchUpInside) Or for Swift 2.2 and greater: button.tag =...
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return, return None, and no return at all?

... functions in languages such as C++ or Java. In the following example, we set person's mother's name and then the function exits after completing successfully. def set_mother(person, mother): if is_human(person): person.mother = mother Note: You should never do var = set_mother(my_pe...
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How to clear the cache of nginx?

... Virtualbox. I did not have caching turned on. But looks like sendfile was set to on in nginx.conf and that was causing the problem. @kolbyjack mentioned it above in the comments. When I turned off sendfile - it worked fine. This is because: Sendfile is used to ‘copy data between one file de...
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Generating random numbers in Objective-C

...m() function. It uses a superior algorithm to rand. You don't even need to set a seed. #include <stdlib.h> // ... // ... int r = arc4random_uniform(74); The arc4random man page: NAME arc4random, arc4random_stir, arc4random_addrandom -- arc4 random number generator LIBRARY Stand...
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Error “gnu/stubs-32.h: No such file or directory” while compiling Nachos source code

...source E: Package 'libc6-dev-i386' has no installation candidate I also set the correct environment variables in bash: export LIBRARY_PATH=/usr/lib/$(gcc -print-multiarch) export C_INCLUDE_PATH=/usr/include/$(gcc -print-multiarch) export CPLUS_INCLUDE_PATH=/usr/include/$(gcc -print-multiarch) ...
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How to indent a few lines in Markdown markup?

...ess of writing for the web, so if you find yourself stretching its feature set to do what you need, you might look at whether or not you're using the right tool here. Check out Gruber's docs: http://daringfireball.net/projects/markdown/syntax#html ...
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?

...ormance is very fast) Usage: layout = new ThreeLayout(this, 3); layout.setAnimationDuration(1000); setContentView(layout); layout.getLeftView(); //<---inflate FragmentA here layout.getMiddleView(); //<---inflate FragmentB here layout.getRightView(); //<---inflate FragmentC here //Le...
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Throw keyword in function's signature

...nexpected" << std::endl; } int main(int argc, char **argv){ std::set_unexpected(my_unexpected); try{ throw_exception(); }catch(int x){ std::cout << "catch int: " << x << std::endl; }catch(...){ std::cout << "catch ..." << st...
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Can Go compiler be installed on Windows?

... @Victor: I've just set this up (on 2010-12-11), and it works fine for compiling and linking the HelloWorld, PrimeSieve and Wiki examples. And all three programs run. – Lawrence Dol Dec 12 '10 at 0:23 ...
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Loading cross-domain endpoint with AJAX

... from google.com, you can use this snippet: // It is good specify the charset you expect. // You can use the charset you want instead of utf-8. // See details for scriptCharset and contentType options: // http://api.jquery.com/jQuery.ajax/#jQuery-ajax-settings $.ajaxSetup({ scriptCharset: "utf...