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How do I programmatically shut down an instance of ExpressJS for testing?

I'm trying to figure out how to shut down an instance of Express. Basically, I want the inverse of the .listen(port) call - how do I get an Express server to STOP listening, release the port, and shutdown cleanly? ...
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What does .SD stand for in data.table in R

...ollapse="_")], by=y] # y V1 # 1: 1 a1_b3_c5 # 2: 3 a2_b4_c6 Basically, the by=y statement breaks the original data.table into these two sub-data.tables DT[ , print(.SD), by=y] # <1st sub-data.table, called '.SD' while it's being operated on> # x v # 1: a 1 # 2: b 3 # 3: c 5 # &l...
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How to exit a function in bash

...n is true without killing the whole script, just return back to before you called the function. 3 Answers ...
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What is global::?

...ass System { } } If you were to use System where it would be locally scoped in the foo class, you could use: global::System.Console.WriteLine("foobar"); to access the global namespace. Example using System; class Foo { public void baz() { Console.WriteLine("Foo 1");...
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Go Unpacking Array As Arguments

... sum as many things as you'd like. Notice the important ... after when you call the my_func function. Running example: http://ideone.com/8htWfx share | improve this answer | ...
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How to delete all datastore in Google App Engine?

...u'll have to do this for all your tables). You can do the same programmatically through the remote_api (but I never used it). If you're talking about the development datastore, you'll just have to delete the following file: "./WEB-INF/appengine-generated/local_db.bin". The file will be generated f...
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Get a list of distinct values in List

In C#, say I have a class called Note with three String member variables. 5 Answers 5 ...
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cancelling a handler.postdelayed process

...unnable, SPLASH_DISPLAY_LENGTH); And this to remove it: myHandler.removeCallbacks(myRunnable); share | improve this answer | follow | ...
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Extension method and dynamic object

... aren't supported by dynamic typing in the form of extension methods, i.e. called as if they were instance methods. However, this will work: dynamic dList = list; Console.WriteLine(Enumerable.First(dList)); Of course, that may or may not be useful. If you could give more information about why and...
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What is the use of interface constants?

...ehaviour of that information should first be understood, along with the so-called business rules - before engineering or supplementing solutions to the process. Such method of information organization was called data normalization a few decades ago. Then only the engineering of a solution be possibl...