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What's the optimum way of storing an NSDate in NSUserDefaults?

There's two ways of storing an NSDate in NSUserDefaults that I've come across. 4 Answers ...
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Android: TextView automatically truncate and replace last 3 char of String

If a String is longer than the TextView 's width it automatically wraps onto the next line. I can avoid this by using android:singleLine (deprecated) or by setting android:inputType="text" . What I need now is something that replaces the last 3 characters of my String with " ... ". Since I'm...
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How to set the thumbnail image on HTML5 video?

Is there a way to set thumbnail image on HTML5 video? I want to see some pictures before play. My code looks like this: 7 A...
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In HTML5, is the localStorage object isolated per page/domain?

Is the HTML5 localStorage object isolated per page/domain? I am wondering because of how I would name localStorage keys. Do I need a separate prefix? Or can I name them whatever I want? ...
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What does Html.HiddenFor do?

Although I have read the documentation on Html.HiddenFor, I've not grasped what is it used for... 4 Answers ...
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How do I cast a variable in Scala?

Given a variable with type Graphics , how do I cast it to Graphics2D in Scala? 2 Answers ...
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In an array of objects, fastest way to find the index of an object whose attributes match a search

I've been surfing around a little trying to find an efficient way to do this, but have gotten nowhere. I have an array of objects that looks like this: ...
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What is the 
 character?

What's the meaning of this char? 6 Answers 6 ...
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Why is Scala's immutable Set not covariant in its type?

EDIT : Re-written this question based on original answer 3 Answers 3 ...
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Select multiple columns in data.table by their numeric indices

How can we select multiple columns using a vector of their numeric indices (position) in data.table ? 5 Answers ...