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How to filter None's out of List[Option]?

If I have a List[Option[A]] in Scala, what is the idiomatic way to filter out the None values? 3 Answers ...
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How do I convert an interval into a number of hours with postgres?

Say I have an interval like 6 Answers 6 ...
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How to inspect the return value of a function in GDB?

Is it possible to inspect the return value of a function in gdb assuming the return value is not assigned to a variable? ...
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How to make the tab character 4 spaces instead of 8 spaces in nano?

When I press TAB in nano editor, the cursor will jump with 8 spaces like this: 6 Answers ...
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How to check iOS version?

I want to check if the iOS version of the device is greater than 3.1.3 I tried things like: 37 Answers ...
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How to escape % in String.Format?

I am storing a SQL query in my strings.xml file and I want to use String.Format to build the final string in code. The SELECT statement uses a like, something like this: ...
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Find (and kill) process locking port 3000 on Mac

How do I find (and kill) processes that listen to/use my tcp ports? I'm on mac os x. 31 Answers ...
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Finding Key associated with max Value in a Java Map

What is the easiest way to get key associated with the max value in a map? 16 Answers ...
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bool to int conversion

How portable is this conversion. Can I be sure that both assertions pass? 4 Answers 4 ...
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Why is git push gerrit HEAD:refs/for/master used instead of git push origin master

I've just started using gerrit and I want to know why we need to do git push gerrit HEAD:refs/for/master instead of doing git push origin master ...