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Getting Started With the SRVB Cryptosystem

This article will give you an introduction to the principles behind public-key cryptosystems and introduce you to the Santana Rocha-Villas Boas (SRVB) cryptosystem, developed by the author of the article and prof. Daniel Santana Rocha. The algorithm authors are making a campaign that includes a financial reward to anyone who manages to crack the code.

27-minute readContinue Reading
Yuri da Silva Villas Boas

Yuri da Silva Villas Boas

Guide to Spring Boot REST API Error Handling

Spring Boot provides beneficial error messages to engineers building REST APIs. Yet, those messages are useless for the general API consumer. We provide a simple approach to improving this functionality.

8-minute readContinue Reading
Bruno Leite

Bruno Leite

Orchestrating a Background Job Workflow in Celery for Python

In this article, I will try to give you a good understanding of which scenarios could be covered by Celery. Not only will you see interesting examples, but will also learn how to apply Celery with real world tasks such as background mailing, report generation, logging and error reporting. I will share my own way of testing tasks beyond emulation and explain a few tricks that go beyond the official documentation and took me hours of research to discover myself.

15-minute readContinue Reading
Rustem Kamun

Rustem Kamun

Should We Rethink the Use of EBITDA?

EBITDA is one of the most common metrics in finance. However, while intended to provide a “cleaner” picture of operating performance than net income, in reality it often achieves the opposite effect. It is also in many cases a questionable proxy for cash flow, as well as a dubious valuation tool.

21-minute readContinue Reading
Puneet Gandhi

Puneet Gandhi

How to Create Nested Symbols in Sketch

Sketch is not a complex tool, but it’s array of features can save you a lot of time – especially Symbols. In this tutorial, learn how to nest symbols in Sketch.

< 5-minute readContinue Reading
Wojciech Dobry

Wojciech Dobry

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The Ultimate List of 50 of the Best Sketch Plugins

Designers love Sketch for its simplicity. They love it thanks to its plugins, which add numerous features. Here are 50 of the very best plugins for Sketch.

8-minute readContinue Reading
Wojciech Dobry

Wojciech Dobry

Why Investors Are Irrational, According to Behavioral Finance

Though traditional economic theory posits that individuals are rational, we all know this to be an oversimplification of the truth. The cyclical investment process is rife with psychological pitfalls. Only by becoming aware of and actively avoiding innate behavioral biases can investors reach impartial decisions. Herein lies the true value of the emerging field of behavioral finance, which sheds light on investor psychology and true financial behavior.

15-minute readContinue Reading
Melissa Lin

Melissa Lin

iOS Centralized and Decoupled Networking: AFNetworking Tutorial with a Singleton Class

The Model-View-Controller (MVC) design pattern is great for the longevity and maintainability of an iOS application’s codebase… but you may find yourself adding similar functions to multiple models as your app grows. In cases such as networking, moving common logic out of your model classes and into singleton helper classes can be a better approach. In this article, I’ll teach you how to set up a centralized singleton networking object that, decoupled from micro-level MVC components, can be reused throughout your application.

11-minute readContinue Reading
James Cahall

James Cahall

iOS ARKit Tutorial: Drawing in the Air with Bare Fingers

With augmented reality on the rise, more and more libraries and tools are developed to tap into that market. Apple recently released ARKit, which shows great promise through power and simplicity of use.

13-minute readContinue Reading
Osama AbdelKarim AboulHassan

Osama AbdelKarim AboulHassan

A How-to Guide to SVG Animation

The advantages of SVG on the web go beyond producing resolution-independent graphics. With a little CSS and JavaScript, you can apply cool animations and effects to your front end without requiring the user to install bulky plugins.

7-minute readContinue Reading
Juan Calou

Juan Calou

Guide to Data Synchronization in Microsoft SQL Server

Sharing related information among isolated systems has become increasingly important. There are many methods to choose from to perform that task for SQL Server, but it’s important to know which is better for each use case.

11-minute readContinue Reading
Andrej Gajdos

Andrej Gajdos

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