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How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
I'm writing an event-driven publish/subscribe application with NodeJS and Redis. I need an example of how to notify web clients when the data values in Redis change.
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unable to install pg gem
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Worked for me on OS X, but with path to /Applications/Postgres.app/Contents/MacOS/bin/pg_config (I have a standalone Postgres.app)
– Matt
Nov 15 '13 at 19:13
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Stateless vs Stateful - I could use some concrete information
...more in the context of functional programming, but what you will read also applies in other programming paradigms.
Stateless programming is related to the mathematical notion of a function, which when called with the same arguments, always return the same results. This is a key concept of the funct...
Unbalanced calls to begin/end appearance transitions for
... You can generate this warning by presenting the modal vc before the app is done initializing. i.e. Start a tabbed application template app and present a modal vc on top of self.tabBarController as the last line in application:didFinishLaunching. Warning appears. Solution: let the stack unw...
OnCreateOptionsMenu() not called in Fragment
I have an app which got one activity with 2 fragments placed horizontally.
8 Answers
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Read/Write String from/to a File in Android
...ing = bufferedReader.readLine()) != null ) {
stringBuilder.append("\n").append(receiveString);
}
inputStream.close();
ret = stringBuilder.toString();
}
}
catch (FileNotFoundException e) {
Log.e("login activity", "File not f...
PhoneGap: Detect if running on desktop browser
I'm developing a web application that uses PhoneGap:Build for a mobile version and want to have a single codebase for the 'desktop' and mobile versions. I want to be able to detect if PhoneGap calls will work (ie, is the user on a mobile device that will support PhoneGap).
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Backbone View: Inherit and extend events from parent
...ts merging within itself. That being said, I wouldn't have thought of this approach, and it's always nice to be forced to look at things in a different way :)
– EleventyOne
Jan 4 '14 at 6:02
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Python JSON serialize a Decimal object
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For those of us who can't use simplejson (ie. on Google App Engine) this answer is a Godsend.
– Joel Cross
Oct 28 '13 at 15:42
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Run an app on a multiple devices automatically in Android Studio
... multiple Android devices connected to the computer. When I try to run the app I'm developing, the Android Studio always prompt me to choose the device. Is there any way to deploy the app on a multiple devices automatically - by clicking Run or even better with a shortcut?
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