Computational web services with R programming language

Posted on March 04, 2016 by Robin Neumann

The R programming language is a swiss knife for mathematical problems. We examine a way of using these capabilities in a web development environment, concentrating on the setup of a simple web application completely written in R using the library Rook.

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Let's work together during RGSoC 2016!

Posted on February 25, 2016 by Carsten Zimmermann

Rails Girls Summer of Code (»RGSoC«) is a three-month scholarship to allow women to work on Open Source projects fulltime and by this, fostering diversity in Open Source culture.

ABSOLVENTA’s dev team is completely in <3 with the program since its first edition back in 2013 where we coached a team of two super awesome women. It was (and still is) so great to see how the summer of 2013 became the start...

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Exploring the Levenshtein algorithm with Ruby

Posted on November 24, 2015 by Robin Neumann

After a short introduction to the Levenshtein algorithm that determines the similarity of two strings, we'll walk through a concrete example and discuss an exemplary implementation in Ruby. Meant as an encouragement for exploring theoretical algorithms with a language of your choice!

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Lazy Logic: Efficiently Reduce An Array To A Boolean

Posted on November 12, 2015 by Carsten Zimmermann

Ruby is smart when it comes to evaluating boolean expressions. Curiosity about how to best reduce an Enumerable to a boolan value led us to Enumerable#all?(&:call) (lambdas! <3) and a short story about how to exploit Ruby's way of boolean evaluation.

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Instant Local Nginx SSL/TLS Proxy

Posted on May 20, 2015 by Carsten Zimmermann

Enabling SSL/TLS for your Rails development environment can be a pain. I reduced it by automating the setup of a local Nginx SSL-reverse proxy. Works with Mac and Homebrew.

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Insert Rack Middleware during Tests

Posted on October 24, 2014 by Carsten Zimmermann

Test-driving the behaviour of a Rails Engine with and without the host app including a certain middleware is tricky. Two simple hacks in your rspec request spec make it happen.

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Back to Marshal'ed Cookie-Serialization

Posted on August 30, 2014 by Carsten Zimmermann

Upgrading to Rails v4.1, it felt like a good idea to switch to the new default cookie serialization format: JSON. Except later it didn't. Rails offers a migration path from Marshal to JSON, but not vice versa. This article offers a (somewhat hacky) solution to rollback from JSON to Marshal.

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Ruby on Waves: Πάντα ῥεῖ

Posted on August 06, 2014 by Carsten Zimmermann

A technical retrospect of our recently accomplished and most successful relaunch. Also, we took the liberty of unplugging ourselves and embarked on a team event. Quite Literally.

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