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Send message to specific client with socket.io and node.js

I'm working with socket.io and node.js and until now it seems pretty good, but I don't know how to send a message from the server to an specific client, something like this: ...
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difference and when to use getApplication(), getApplicationContext(), getBaseContext() and someClass

I'm new to android and I'm trying to understand the difference between getApplication() , getApplicationContext( ), getBaseContext() , getContext() and someClass.this and especially when to use the these methods in the following code lines: ...
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Android OpenGL ES and 2D

Well, here's my request. I don't know OpenGL already, and I'm not willing to learn it, I want to learn OpenGL ES directly since I'm targeting my development to android, however. I want to learn OpenGL ES in order to develop my 2D games. I chose it for performances purpose (since basic SurfaceView ...
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Auto Resize Image in CSS FlexBox Layout and keeping Aspect Ratio?

...oking for an answer to my distorted images" i got here for the same reason and your solution helped me (what was marked as the actual solution didn't help me at all) – Wagner Danda da Silva Filho Jun 29 '16 at 17:30 ...
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How are “mvn clean package” and “mvn clean install” different?

What exactly are the differences between mvn clean package and mvn clean install ? When I run both of these commands, they both seem to do the same thing. ...
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How to get a thread and heap dump of a Java process on Windows that's not running in a console

...answered Jun 15 '10 at 4:12 rkagandarkaganda 3,80911 gold badge1212 silver badges22 bronze badges ...
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How to put multiple statements in one line?

...t is not possible with Python (which makes Python close to useless for command-line one-liner programs). Even explicit use of parentheses does not avoid the syntax exception. You can get away with a sequence of simple statements, separated by semi-colon: for i in range(10): print "foo"; print "bar"...
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Insert spaces between words on a camel-cased token [duplicate]

... Slightly better regex that handles acronyms correctly: @"(\B[A-Z]+?(?=[A-Z][^A-Z])|\B[A-Z]+?(?=[^A-Z]))" – Aviad P. Dec 24 '12 at 10:01 ...
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How to use concerns in Rails 4

...4 project generator now creates the directory "concerns" under controllers and models. I have found some explanations about how to use routing concerns, but nothing about controllers or models. ...
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Does “git fetch --tags” include “git fetch”?

A nice and simple question - is the function of "git fetch" a strict sub-set of git fetch --tags ? 6 Answers ...