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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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Why does git revert complain about a missing -m option?

So I'm working on a project with other people, and there's multiple github forks being worked on. Someone just made a fix for a problem and I merged with his fork, but then I realized that I could find a better solution. I want to revert the commit I just made. I tried doing this with git revert HE...
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Omitting the first line from any Linux command output

...i'd like to omit the 1st line from the output of ls -latr "some path" Since I need to remove total 136 from the below output ...
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Exception NoClassDefFoundError for CacheProvider

...ew in Spring and hibernate so I'm trying to implement some simple web application based on Spring 3 + hibernate 4 while I start tomcat I have this exception: ...
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Simulate first call fails, second call succeeds

I want to use Mockito to test the (simplified) code below. I don't know how to tell Mockito to fail the first time, then succeed the second time. ...
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filter items in a python dictionary where keys contain a specific string

I'm a C coder developing something in python. I know how to do the following in C (and hence in C-like logic applied to python), but I'm wondering what the 'Python' way of doing it is. ...
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Convert Linq Query Result to Dictionary

...nt to add some rows to a database using Linq to SQL, but I want to make a "custom check" before adding the rows to know if I must add, replace or ignore the incomming rows. I'd like to keep the trafic between the client and the DB server as low as possible and minimize the number of queries. ...
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Group by & count function in sqlalchemy

I want a "group by and count" command in sqlalchemy. How can I do this? 3 Answers 3 ...
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How to escape % in String.Format?

...gs.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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Syntax Error: Not a Chance

I tried executed the following code in the python IDLE 2 Answers 2 ...