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How do I debug error ECONNRESET in Node.js?

...on abruptly closed its end of the connection. This is most probably due to one or more application protocol errors. You could look at the API server logs to see if it complains about something. But since you are also looking for a way to check the error and potentially debug the problem, you should...
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Convert base class to derived class [duplicate]

Is it possible in C# to explicitly convert a base class object to one of it's derived classes? Currently thinking I have to create a constructor for my derived classes that accept a base class object as a parameter and copy over the property values. I don't really like this idea, so I'd like to avoi...
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Call a Server-side Method on a Resource in a RESTful Way

...an be not object-oriented, just using HTTP does not make a design RESTful. One may be caught up in the rush of thinking about their services in terms of actions and remote methods that should be called. No wonder this will mostly end up in a RPC-Style service (or a REST-RPC-hybrid). The first step i...
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Compiler Ambiguous invocation error - anonymous method and method group with Func or Action

... First off, let me just say that Jon's answer is correct. This is one of the hairiest parts of the spec, so good on Jon for diving into it head first. Second, let me say that this line: An implicit conversion exists from a method group to a compatible delegate type (emphasis added) i...
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What is the difference between “screen” and “only screen” in media queries?

... Let's break down your examples one by one. @media (max-width:632px) This one is saying for a window with a max-width of 632px that you want to apply these styles. At that size you would be talking about anything smaller than a desktop screen in most cas...
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Is it better to use std::memcpy() or std::copy() in terms to performance?

...owever, after my first few attempts, I got results that varied wildly from one run to the next, so I'm guessing there was some sort of OS activity going on. I decided to start over. Same compiler settings and flags. There is only one version of MD5, and it's faster than SHA-2, so I did 3000 loops o...
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How to make a website secured with https

...e all you need is a correctly set up SSL certificate. Is SSL and https one and the same.. Pretty much, yes. Do I need to apply with someone to get some license or something. You can buy an SSL certificate from a certificate authority or use a self-signed certificate. The ones you can p...
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How do I base64 encode (decode) in C?

... Here's the one I'm using: #include <stdint.h> #include <stdlib.h> static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', ...
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What is the difference between “ is None ” and “ ==None

...ison any way it chooses, and it can choose to make comparison against None mean something (which actually makes sense; if someone told you to implement the None object from scratch, how else would you get it to compare True against itself?). Practically-speaking, there is not much diff...
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What is the best collation to use for MySQL with PHP? [closed]

...en comparing characters in the language) and performance. The only special one is utf8_bin which is for comparing characters in binary format. utf8_general_ci is somewhat faster than utf8_unicode_ci, but less accurate (for sorting). The specific language utf8 encoding (such as utf8_swedish_ci) cont...