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

...return [UIWindow getVisibleViewControllerFrom:[((UITabBarController *) vc) selectedViewController]]; } else { if (vc.presentedViewController) { return [UIWindow getVisibleViewControllerFrom:vc.presentedViewController]; } else { return vc; } } }...
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Android: Getting a file URI from a content URI?

In my app the user is to select an audio file which the app then handles. The problem is that in order for the app to do what I want it to do with the audio files, I need the URI to be in file format. When I use Android's native music player to browse for the audio file in the app, the URI is a cont...
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What do the f and t commands do in Vim?

...h occurrence of a given letter 100% correct. With v you can see the visual selection, a nice visual cue. – Bentley4 Nov 27 '13 at 19:00 2 ...
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How do I change the color of the text in a UIPickerView under iOS 7?

...IColor whiteColor]}]; return attString; } If you want to change the selection bar colors as well, I found that I had to add 2 separate UIViews to the view containing the UIPickerView, spaced 35 pts apart for a picker height of 180. Swift 3: func pickerView(_ pickerView: UIPickerView, attrib...
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What does java.lang.Thread.interrupt() do?

...eceive a ClosedByInterruptException. If this thread is blocked in a Selector then the thread's interrupt status will be set and it will return immediately from the selection operation, possibly with a non-zero value, just as if the selector's wakeup method were invoked. If none...
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mmap() vs. reading blocks

... way faster. You might write a simple benchmark to prove it to yourself: char data[0x1000]; std::ifstream in("file.bin"); while (in) { in.read(data, 0x1000); // do something with data } versus: const int file_size=something; const int page_size=0x1000; int off=0; void *data; int fd = open...
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Can I use my existing git repo with openshift?

...rting PHP 5.4 cartridge (Apache+mod_php) remote: Application directory "/" selected as DocumentRoot remote: ------------------------- remote: Git Post-Receive Result: success remote: Activation status: success remote: Deployment completed with status: success To ssh://23456789@myapp-namespace.rhclou...
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Disable pasting text into HTML form

...g the on-screen keyboard doesn't send keys to the browser when each key is selected). If it's possible your page/app could be used by someone with an on-screen keyboard and Opera (e.g.: Nintendo Wii, some mobile phones), don't use this script unless you've tested to make sure the on-screen keyboard ...
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)

... Read the slice syntax array[x,y] as "starting after x elements in array, select up to y elements". This is only meaningful if array has at least x elements. share | improve this answer | ...
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How do I make a fully statically linked .exe with Visual Studio Express 2005?

...e configurations, you should make them to "All Configurations" --- you can select this at the top of the Properties window. If you make the change to just the Debug configuration, it won't apply to the Release configuration, and vice-versa. ...