So we have this project in Ruby on Rails where we keep track of several reports. Now we need to do some visualizations with all those reports. We analyzed several solutions. One was using Google Fusion Tables but we soon realized it was not an easy...
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Powerful Google Visualizations for Ruby on Rails
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Partitioned Graph Coloring
Before going into how to solve the partitioned graph coloring problem using integer linear programming (which is the goal of my thesis), I thought it would be a good idea to actually explain what is the partitioned graph coloring problem (or PCP from...
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What is Linear Programming
Despite being able to simply provide a link to wikipedia’s already excellent article on Linear Programming, I wanted to provide a short introduction in order to present what I am doing exactly on my thesis in a future article. Linear Programming...
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Making a thesis 2.0
Continuing with the tradition started by Beta two years ago here in Manas, I am now dedicating all my efforts to finish my thesis in order to obtain my MSc degree in Computer Science at FCEN-UBA. Having started it a few months ago, Manas generously...
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Building an application to track expenses in one hour using GeoChat
Whenever one of our team member travels to another country we tell her to track expenses like food, transportation and accomodation so that later that money can be refunded. Each of us does it in a different way: we write it in a notes application...
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Install the RMagick gem in the painless way with Homebrew
Introduction Disclaimer: this section is just happy talking, if you want to get right to the beef, skip it and go right to the beef. Yesterday was a sad day for me. It wasn’t meant to be like that. I began the day with the intention of setting up...
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Quick way to test many values in ruby
Many times we end up having similar tests: same logic but different inputs and expected outputs. For example, suppose we need to test our brand new sqrt function: test "sqrt 1" do assert_equals 1, sqrt(1) end test "sqrt 4" do assert_equals 2,
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Deleting children with accepts_nested_attributes_for in Rails
On the previous post I wrote a few lines on the basic usage of the accepts_nested_attributes_for method in rails models. I strongly recommend reading that post before this one if you haven’t. Although there is a standard way for deleting items, there...
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Status Update
It’s been a while since the last time I wrote something here. I realize I’ve promised several posts which never got written, such as some experiments with bizarre random number generators, the architecture of the silverlight DynamicDeepZoom app we...
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Handling children with accepts_nested_attributes_for in Rails
Rails makes it easy to build HTML forms associated to a certain model. Simply using the form_for instruction on the view, writing a simple update method in the controller and setting validation logic on the model, makes standard CRUD operations incredibly...
Contributors

Nicolás di Tada Founder

Jonathan Kicillof Art Director

Matías García Isaía Full-stack Engineer & Site Reliability Engineer

Francisco Tarulla Full-stack Engineer

Martin Pettinati Marketing & Communications Lead
Ismael Bejarano Full-stack Engineer

Beta Ziliani Team Lead & Product Manager

Leandro Radusky Alumni

Martín Verzilli CTO

Sergio Medina Alumni

Pablo Brusco Alumni

María Inti David Alumni

Ary Borenszweig Alumni

Santiago Palladino Alumni

Valeria Tiffenberg Alumni

Paula Mallol Alumni

Juan Wajnerman Alumni

Brian J. Cardiff Alumni

Leandro Matayoshi Alumni

Mitchell Russell Alumni