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Table Header Views in StoryBoards

...when I had moved the view out of the regular hierarchy first; I dragged it all the way to the bottom of the outline for that scene. Then, in a 2nd step, I could move it onto the table view. – Daniel Schneller Sep 23 '13 at 20:00 ...
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Repeat a task with a time delay?

...er()); private Runnable mStatusChecker; private int UPDATE_INTERVAL = 2000; /** * Creates an UIUpdater object, that can be used to * perform UIUpdates on a specified time interval. * * @param uiUpdater A runnable containing the update ro...
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An async/await example that causes a deadlock

...lick for UI / MyController.Get for ASP.NET): The top-level method calls GetJsonAsync (within the UI/ASP.NET context). GetJsonAsync starts the REST request by calling HttpClient.GetStringAsync (still within the context). GetStringAsync returns an uncompleted Task, indicating the REST requ...
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Set focus on TextBox in WPF from view model

...ample? Is it a TextBox control? If yes, then you are on a wrong way. Generally speaking it's not a good idea to have any reference to UI in your ViewModel. You can ask "Why?" but this is another question to post on Stackoverflow :). The best way to track down issues with Focus is... debugging .Net ...
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input type=“submit” Vs button tag are they interchangeable?

...an INPUT element whose type is set to "image", but the BUTTON element type allows content. So for functionality only they're interchangeable! (Don't forget, type="submit" is the default with button, so leave it off!) shar...
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Interfaces with static fields in java for sharing 'constants'

... It's generally considered bad practice. The problem is that the constants are part of the public "interface" (for want of a better word) of the implementing class. This means that the implementing class is publishing all of these val...
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How to detect Safari, Chrome, IE, Firefox and Opera browser?

...it's truly necessary, such as showing browser-specific instructions to install an extension. Use feature detection when possible. Demo: https://jsfiddle.net/6spj1059/ // Opera 8.0+ var isOpera = (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >...
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How to capture UIView to UIImage without loss of quality on retina display

...IGraphicsBeginImageContext uses a fixed scale factor of 1.0, so you're actually getting exactly the same image on an iPhone 4 as on the other iPhones. I'll bet either the iPhone 4 is applying a filter when you implicitly scale it up or just your brain is picking up on it being less sharp than everyt...
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How to check if command line tools is installed

I have a macbook pro with OS X 10.8.2. XCode is installed. I know this as it appears in the Applications directory. There are also the xcodebuild and xcode-select files in /usr/bin I need to know if the command line tools is installed. Is there a command for it? What can I do to see if XCode CLT is ...
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When is -XAllowAmbiguousTypes appropriate?

... should be able to follow functional dependencies in order to disambiguate all the other types used in the context, namely sup and fi. And indeed, the f -> internal functional dependency in SyntacticN uses our f to disambiguate our fi, and thereafter the f -> sig sym functional dependency in A...