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Difference between encoding and encryption

... Encoding transforms data into another format using a scheme that is publicly available so that it can easily be reversed. Encryption transforms data into another format in such a way that only specific individual(s) can reverse the transfo...
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What does 'predicate' mean in the context of computer science? [duplicate]

...al Logic. From wikipedia In mathematics, a predicate is either a relation or the boolean-valued function that amounts to the characteristic function or the indicator function of such a relation. A function P: X→ {true, false} is called a predicate on X. When P is a predicate on X, we sometimes sa...
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What are Maven goals and phases and what is their difference?

... Goals are executed in phases which help determine the order goals get executed in. The best understanding of this is to look at the default Maven lifecycle bindings which shows which goals get run in which phases by default. The compile phase goals will always be executed befo...
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Automatically import modules when entering the python or ipython interpreter

I find myself typing import numpy as np almost every single time I fire up the python interpreter. How do I set up the python or ipython interpreter so that numpy is automatically imported? ...
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In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?

I am building a small chat application for friends, but unsure about how to get information in a timely manner that is not as manual or as rudimentary as forcing a page refresh. ...
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JavaScript frameworks to build single page applications [closed]

... (SPA). Currently, I'm evaluating several Javascript web application frameworks. 2 Answers ...
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Proper way to return JSON using node or Express

...at response is a string too, if you want to send the response prettified, for some awkward reason, you could use something like JSON.stringify(anObject, null, 3) It's important that you set the Content-Type header to application/json, too. var http = require('http'); var app = http.createServer(fun...
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MySQL show status - active or total connections?

...ch is 9972 and constantly growing. Is this an active number of connections or connections made in total? 8 Answers ...
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Framework vs. Toolkit vs. Library [duplicate]

What is the difference between a Framework, a Toolkit and a Library? 12 Answers 12 ...
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How to make a website secured with https

I have to build a small webapp for a company to maintain their business data... Only those within the company will be using it, but we are planning to host it in public domain, so that the employees can connect to app from various locations. (Till now I have built web apps that are hosted internall...