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Alfredo Motta

Software Engineering, Machine Learning and Innovation blog.

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Not So Random Software #31 – Collaborative Filtering, Coaching, Rails performance and SQL views

Not So Random Software #31 – Collaborative Filtering, Coaching, Rails performance and SQL views

Categories:NewsletterUpdated on: July 22, 2020June 25, 2020 mottalrd

Hello everyone and welcome back to Not So Random Software! This week links are as random as it gets; we will start with a research …

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Dockerized Rails Capybara tests on top of Selenium

Dockerized Rails Capybara tests on top of Selenium

Categories:ArticleUpdated on: July 22, 2020May 31, 2016 mottalrd

If you use Docker to deploy your Rails application you may want to use the same infrastructure to run your tests. However the setup of your Selenium …

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How to isolate complex queries in an object oriented fashion

How to isolate complex queries in an object oriented fashion

Categories:ArticleUpdated on: July 22, 2020January 28, 2016 mottalrd

Building complex queries in ruby can make your code quite difficult to read, manage and reuse. In this blog post I’ll present a simple method to …

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Upload video files with progress bar using Rails, Paperclip and Javascript

Upload video files with progress bar using Rails, Paperclip and Javascript

Categories:ArticleUpdated on: July 22, 2020May 24, 2015 mottalrd

Rails does not help much when dealing with AJAX uploads by means of external JS libraries. I recently came across a case where a user …

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A journey through a Web App optimization session

A journey through a Web App optimization session

Categories:ArticleUpdated on: July 22, 2020October 1, 2014 mottalrd

Fast web apps are beautiful to use and are one of the key requirements for a successful user experience. Not only, if you are running …

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