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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...
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");...
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
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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...
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);
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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...
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...