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Move an array element from one array position to another

I'm having a hard time figuring out how to move an array element. For example, given the following: 31 Answers ...
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Why doesn't ruby support method overloading?

Instead of supporting method overloading Ruby overwrites existing methods. Can anyone explain why the language was designed this way? ...
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Purpose of memory alignment

...mory word of length of 1 byte. Why can't you access a 4 byte long variable in a single memory access on an unaligned address(i.e. not divisible by 4), as it's the case with aligned addresses? ...
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How do CDI and EJB compare? interact?

I'm having a tough time understanding how the two interact and where the boundary between them lies. Do they overlap? Are there redundancies between them? ...
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How can I run code on a background thread on Android?

I want some code to run in the background continuously. I don't want to do it in a service. Is there any other way possible? ...
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Overload with different return type in Java?

Why is it not possible to overload a function just by changing the return type? Will that change in a future version of Java? ...
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How to generate a random string of a fixed length in Go?

I want a random string of characters only (uppercase or lowercase), no numbers, in Go. What is the fastest and simplest way to do this? ...
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In which scenario do I use a particular STL container?

I've been reading up on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of the...
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ViewPager.setOffscreenPageLimit(0) doesn't work as expected

The fragments I use in my ViewPager instance are quite resource intensive, so I'd only like to load one at a time. When I try the following: ...
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How can I read and parse CSV files in C++?

I need to load and use CSV file data in C++. At this point it can really just be a comma-delimited parser (ie don't worry about escaping new lines and commas). The main need is a line-by-line parser that will return a vector for the next line each time the method is called. ...