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How does push notification technology work on Android?
...ud Google server. The TCP connection had been initiated by the Google Play application. That's why Google Play must be installed on the device for making Google Cloud Messaging (GCM) (formerly Android Cloud to Device Messaging Service - C2DM) work.
When this TCP client socket receives some message,...
String concatenation in Ruby
... the usual way
With string interpolation
source = "#{ROOT_DIR}/#{project}/App.config"
with +
source = "#{ROOT_DIR}/" + project + "/App.config"
The second method seems to be more efficient in term of memory/speed from what I've seen (not measured though). All three methods will throw an uniniti...
What are the Dangers of Method Swizzling in Objective-C?
...void)load. The load class method is executed serially at the start of your application. You won't have any issues with concurrency if you do your swizzling here. If you were to swizzle in +(void)initialize, however, you could end up with a race condition in your swizzling implementation and the runt...
Express.js: how to get remote client address
... as stated in the Express behind proxies section of Express - guide.
Add app.set('trust proxy', true) to your express initialization code.
When you want to get the ip of the remote client, use req.ip or req.ips in the usual way (as if there isn't a reverse proxy)
Optional reading:
Use req.ip o...
asp.net mvc put controllers into a separate project
...llers into a separate project. Typically when I have designed asp.net web apps before, I created one project for my models, another for my logic, and then there was the web.
...
When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
...Bundle outState)
If called, this method will occur after onStop() for applications targeting platforms starting with Build.VERSION_CODES.P. For applications targeting earlier platform versions this method will occur before onStop() and there are no guarantees about whether it will occur before ...
AngularJS: Injecting service into a HTTP interceptor (Circular dependency)
I'm trying to write a HTTP interceptor for my AngularJS app to handle authentication.
5 Answers
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Install Application programmatically on Android
...rogrammatically install a dynamically downloaded apk from a custom Android application.
16 Answers
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Real world use of JMS/message queues? [closed]
... access from a C#/Java/Ruby client.
A real world example is that of a web application that is used to place an order for a particular customer. As part of placing that order (and storing it in a database) you may wish to carry a number of additional tasks:
Store the order in some sort of third p...
What is the best IDE to develop Android apps in? [closed]
I am about to start developing an android app and need to get an IDE. Eclipse and the android eclipse plugin appears to be the natural choice. However I am familiar with intelliJ and re-sharper so I would prefer use intelliJ.
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