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How to run Node.js as a background process and never die?
...basic usage
$ npm install forever -g
$ forever start app.js
# you can run from a json configuration as well, for
# more complex environments or multi-apps
$ forever start development.json
Init scripts:
I'm not go into detail about how to write a init script, because I'm not an expert in this sub...
Using ZXing to create an Android barcode scanning app [duplicate]
...ode scanning.
The easiest way to do this is to call the ZXing SCAN Intent from your application, like this:
public Button.OnClickListener mScan = new Button.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
int...
Maximum single-sell profit
...tly n + (n - 1) + (n - 2) + ... + 1 = n(n + 1)/2 different pairs to pick
# from, so this algorithm will grow quadratically in the worst-case. However,
# it uses only O(1) memory, which is a somewhat attractive feature. Plus, if
# our first intuition for the problem gives a quadratic solution, we c...
Get value from SimpleXMLElement Object
I have something like this:
12 Answers
12
...
Java - Method name collision in interface implementation
...ue; } // Beta.m()
};
}
}
Although it doesn't allow for casts from AlfaBeta to Beta, downcasts are generally evil, and if it can be expected that an Alfa instance often has a Beta aspect, too, and for some reason (usually optimization is the only valid reason) you want to be able to con...
How can I run code on a background thread on Android?
.... terminated might also be caused by exception, or user killed it manually from settings.
START_STICKY (Sticky Service) is the option given by android that service will restart itself if service terminated.
Remember the question difference between multiprocessing and multithreading?
Service is a ba...
Why is “using namespace std;” considered bad practice?
...foo;
using namespace bar;
Everything works fine, and you can call Blah() from Foo and Quux() from Bar without problems. But one day you upgrade to a new version of Foo 2.0, which now offers a function called Quux(). Now you've got a conflict: Both Foo 2.0 and Bar import Quux() into your global nam...
Django DB Settings 'Improperly Configured' Error
... 3) to check some things, I get the weirdest error when I try importing - from django.contrib.auth.models import User -
...
Determine if two rectangles overlap each other?
I am trying to write a C++ program that takes the following inputs from the user to construct rectangles (between 2 and 5): height, width, x-pos, y-pos. All of these rectangles will exist parallel to the x and the y axis, that is all of their edges will have slopes of 0 or infinity.
...
What are the rules for calling the superclass constructor?
What are the C++ rules for calling the superclass constructor from a subclass one?
10 Answers
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