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Peak signal detection in realtime timeseries data

...do not corrupt the threshold. Future signals are therefore identified with approximately the same accuracy, regardless of the amount of previous signals. The algorithm takes 3 inputs: lag = the lag of the moving window, threshold = the z-score at which the algorithm signals and influence = the influ...
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Creating an API for mobile applications - Authentication and Authorization

I'm looking to create a (REST) API for my application. The initial/primary purpose will be for consumption by mobile apps (iPhone, Android, Symbian, etc). I've been looking into different mechanisms for authentication and authorization for web-based APIs (by studying other implementations). I've ...
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Why is it common to put CSRF prevention tokens in cookies?

I'm trying to understand the whole issue with CSRF and appropriate ways to prevent it. (Resources I've read, understand, and agree with: OWASP CSRF Prevention CHeat Sheet , Questions about CSRF .) ...
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Separation of business logic and data access in django

...confusing and, after a certain time, I cease to understand what is really happening. 10 Answers ...
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PHP global in functions

...d on the outside. Which means, you have to know the full global state your application is in before you can reliably call any of these. The function cannot exist without that environment. Using the superglobals might not be an obvious flaw, but if you call your code from a Command Line, you don't ...
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Fundamental difference between Hashing and Encryption algorithms

...ant an explanation, I'll do my best here: Hash Functions They provide a mapping between an arbitrary length input, and a (usually) fixed length (or smaller length) output. It can be anything from a simple crc32, to a full blown cryptographic hash function such as MD5 or SHA1/2/256/512. The point...
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C++ equivalent of java's instanceof

... call. It also works regardless of RTTI is enabled or not. Note that this approach doesn't support multiple levels of inheritance so if you're not careful you might end with code looking like this: // Here we have a SpecialBox class that inherits Box, since it has its own type // we must check for...
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Understanding REST: Verbs, error codes, and authentication

...ooking for a way to wrap APIs around default functions in my PHP-based web applications, databases and CMSs. 10 Answers ...
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Two-way encryption: I need to store passwords that can be retrieved

I am creating an application that will store passwords, which the user can retrieve and see. The passwords are for a hardware device, so checking against hashes are out of the question. ...
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What's the “big idea” behind compojure routes?

I'm new to Clojure and have been using Compojure to write a basic web application. I'm hitting a wall with Compojure's defroutes syntax, though, and I think I need to understand both the "how" and the "why" behind it all. ...