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Get element at specified position - JavaScript

...lly I'm looking to write a function that takes two input parameters (the x and y coordinates) and returns the html element at the position on the screen represented by the parameters. ...
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Why aren't Java Collections remove methods generic?

... Josh Bloch and Bill Pugh refer to this issue in Java Puzzlers IV: The Phantom Reference Menace, Attack of the Clone, and Revenge of The Shift. Josh Bloch says (6:41) that they attempted to generify the get method of Map, remove meth...
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Advantages of using display:inline-block vs float:left in CSS

...ck The only drawback to the display: inline-block approach is that in IE7 and below an element can only be displayed inline-block if it was already inline by default. What this means is that instead of using a <div> element you have to use a <span> element. It's not really a huge drawb...
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sed command with -i option failing on Mac, but works on Linux

I've successfully used the following sed command to search/replace text in Linux: 12 Answers ...
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How to call any method asynchronously in c#

...ibrary in .Net 4. It's much, much nicer than using BeginInvoke/EndInvoke, and gives a clean way to fire-and-forget for async jobs: using System.Threading.Tasks; ... void Foo(){} ... new Task(Foo).Start(); If you have methods to call that take parameters, you can use a lambda to simplify the call...
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What is meant by Ems? (Android TextView)

... android:ems or setEms(n) sets the width of a TextView to fit a text of n 'M' letters regardless of the actual text extension and text size. See wikipedia Em unit but only when the layout_width is set to "wrap_content". Other...
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How to round up to the nearest 10 (or 100 or X)?

...en James answer seems most appropriate. My version lets you take any value and automatically round it to a reasonably "nice" value. Some other good choices of the "nice" vector above are: 1:10, c(1,5,10), seq(1, 10, 0.1) If you have a range of values in your plot, for example [3996.225, 40001.893] ...
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Instance variable: self vs @

... I have once read a book in rails and don't understand the difference between this self and @, so I should always use self.var_name in my methods (that doesn't setter and getter) to make my data using public interface, I spent time defining it in getter and s...
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Glorified classes in the Java language

Some classes in the standard Java API are treated slightly different from other classes. I'm talking about those classes that couldn't be implemented without special support from the compiler and/or JVM. ...
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HTML text-overflow ellipsis detection

...ite-space, overflow, text-overflow set so that overflowing text is trimmed and an ellipsis is used. 13 Answers ...