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Socket.IO Authentication

I am trying to use Socket.IO in Node.js, and am trying to allow the server to give an identity to each of the Socket.IO clients. As the socket code is outside the scope of the http server code, it doesn't have easy access to the request information sent, so I'm assuming it will need to be sent up d...
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How to handle WndProc messages in WPF?

... Actually, as far as I understand such a thing is indeed possible in WPF using HwndSource and HwndSourceHook. See this thread on MSDN as an example. (Relevant code included below) // 'this' is a Window HwndSource source = HwndSou...
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Interfaces with static fields in java for sharing 'constants'

... It's generally considered bad practice. The problem is that the constants are part of the public "interface" (for want of a better word) of the implementing class. This means that the implementing class is publishing all of these val...
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Can I inject a service into a directive in AngularJS?

...ource end point or a generic delete-record button which interacts with any api end point. You don't want to re-implement the table directive for every controller or data-source. template.html <div my-directive api-service='ServiceName'></div> my-directive.directive.coffee angular.mo...
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Explaining Python's '__enter__' and '__exit__'

... Using these magic methods (__enter__, __exit__) allows you to implement objects which can be used easily with the with statement. The idea is that it makes it easy to build code which needs some 'cleandown' code executed (think of it as a try-finally block). Some more ex...
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How to convert a scala.List to a java.util.List?

...er luck with asScalaBuffer() in the JavaConverters package: scala-lang.org/api/2.12.1/scala/collection/JavaConverters$.html – Sarah Messer Sep 4 '19 at 13:43 add a comment ...
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What is :: (double colon) in Python when subscripting sequences?

... @UmarAsghar n means start. so the list start from nth index. Basically, [start:stop:step] – harryghgim Sep 1 at 11:42 add a comment  |  ...
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How to clone a case class instance and change just one field in Scala?

...d? I can't find a reference to copy in the "obvious" spots, scala-lang.org/api/current/index.html for instance. – François Beausoleil Aug 30 '11 at 20:38 6 ...
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Using module 'subprocess' with timeout

...that contains command's merged stdout, stderr data. check_output raises CalledProcessError on non-zero exit status as specified in the question's text unlike proc.communicate() method. I've removed shell=True because it is often used unnecessarily. You can always add it back if cmd indeed requir...
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What is the difference between require_relative and require in Ruby?

... the docs: require_relative complements the builtin method require by allowing you to load a file that is relative to the file containing the require_relative statement. For example, if you have unit test classes in the "test" directory, and data for them under the test "test/data" directo...