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What does an underscore in front of an import statement mean?

I saw this example from sqlite3 on GitHub : 4 Answers 4 ...
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How can I create a correlation matrix in R?

I have 92 set of data of same type. 5 Answers 5 ...
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How to view revision history for Mercurial file?

For a given file in a Mercurial repository, how can you see the revision history? 4 Answers ...
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Specify width in *characters*

When using a fixed width font , I'd like to specify the width of an HTML element in characters . 2 Answers ...
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Naming convention for utility classes in Java

When writing utility classes in Java, what are some good guidelines to follow? 5 Answers ...
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Android Reading from an Input stream efficiently

I am making an HTTP get request to a website for an android application I am making. 12 Answers ...
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Can I return the 'id' field after a LINQ insert?

When I enter an object into the DB with Linq-to-SQL can I get the id that I just inserted without making another db call? I am assuming this is pretty easy, I just don't know how. ...
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jQuery Ajax File Upload

Can I use the following jQuery code to perform file upload using POST method of an ajax request ? 24 Answers ...
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Is there a way to ignore a single FindBugs warning?

With PMD, if you want to ignore a specific warning, you can use // NOPMD to have that line be ignored. 7 Answers ...
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Useful example of a shutdown hook in Java?

I'm trying to make sure my Java application takes reasonable steps to be robust, and part of that involves shutting down gracefully. I am reading about shutdown hooks and I don't actually get how to make use of them in practice. ...