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Import Maven dependencies in IntelliJ IDEA
...ntelliJ) and remove all *.iml files and all .idea folders (there should be one per module)
Run mvn clean install from the command line
Re-import the project into IntelliJ and pay attention when it asks you to enable auto-import
IntelliJ 2016 Update:
The Import Maven Projects automatically setting...
What does OSGi solve?
...ut OSGi , but I don't really see the big picture. It says that it's a component-based platform, and that you can reload modules at runtime. Also the "practical example" given everywhere is the Eclipse Plugin Framework.
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Execute AsyncTask several times
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AsyncTask instances can only be used one time.
Instead, just call your task like new MyAsyncTask().execute("");
From the AsyncTask API docs:
Threading rules
There are a few threading rules that must be followed for this class to work properly:
The task instance...
How can I apply a function to every row/column of a matrix in MATLAB?
...ou are applying to take advantage of this.
If that's not a viable option, one way to do it is to collect the rows or columns into cells using mat2cell or num2cell, then use cellfun to operate on the resulting cell array.
As an example, let's say you want to sum the columns of a matrix M. You can d...
Java 8 stream reverse order
...end to leak the Estreams name (I'm going to remove it from the post). It's one of our company's internal utility classes, which we use to supplement java.util.stream.Stream's static methods.
– Brandon
Jan 6 '16 at 20:54
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Why would a static nested interface be used in Java?
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The question has been answered, but one good reason to use a nested interface is if its function is directly related to the class it is in. A good example of this is a Listener. If you had a class Foo and you wanted other classes to be able to listen for events...
std::string to char*
...ard I also explain some side effects of the use of this function, of which one is that you may not edit the string returned by c_str(). You mistakenly see my short examples as real problem-solving code, which it's not.
– orlp
Sep 8 '11 at 20:19
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Spring Boot - inject map from application.yml
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Nice, thanks Andy, worked like a charm! One more thing - when setting locations (to get the properties from another yml file instead of the default application.yml) on @ConfigurationProperties, it worked, except it did not result in placeholders being replaced. E.g...
MySQL, better to insert NULL or empty string?
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but which one you think is faster? 0 or NULL or ""
– Atul Dravid
Oct 16 '10 at 23:48
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How to convert/parse from String to char in java?
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If your string contains exactly one character the simplest way to convert it to a character is probably to call the charAt method:
char c = s.charAt(0);
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