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How to list files in an android directory?

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Add border-bottom to table row

I have a table of 3 by 3. I need a way to add a border for the bottom of every row tr and give it a specific color. 16 An...
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Why doesn't Dijkstra's algorithm work for negative weight edges?

Can somebody tell me why Dijkstra's algorithm for single source shortest path assumes that the edges must be non-negative. ...
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Number of days between two dates in Joda-Time

How do I find the difference in Days between two Joda-Time DateTime instances? With ‘difference in days’ I mean if start is on Monday and end is on Tuesday I expect a return value of 1 regardless of the hour/minute/seconds of the start and end dates. ...
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Sound alarm when code finishes

I am in a situation where my code takes extremely long to run and I don't want to be staring at it all the time but want to know when it is done. ...
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Is there a standard sign function (signum, sgn) in C/C++?

I want a function that returns -1 for negative numbers and +1 for positive numbers. http://en.wikipedia.org/wiki/Sign_function It's easy enough to write my own, but it seems like something that ought to be in a standard library somewhere. ...
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Is using a lot of static methods a bad thing?

I tend to declare as static all the methods in a class when that class doesn't require to keep track of internal states. For example, if I need to transform A into B and don't rely on some internal state C that may vary, I create a static transform. If there is an internal state C that I want to be ...
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Decode Base64 data in Java

I have an image that is Base64 encoded. What is the best way to decode that in Java? Hopefully using only the libraries included with Sun Java 6. ...
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Android 4.3 menu item showAsAction=“always” ignored

I'm using the new v7 appcompat library available starting from Android 4.3 (API level 18). 12 Answers ...
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Convert character to ASCII code in JavaScript

How can I convert a character to its ASCII code using JavaScript? 10 Answers 10 ...