zxide

A few months ago I made a gem to manage, run, and test project euler problems.

https://github.com/yaworsw/euler-manager

I wrote a ruby gem to help manage project euler problems a few months ago.

https://github.com/yaworsw/euler-manager

Most of the problem descriptions are in the data/problems directory. You could use the gem to continue to do most of the project euler problems.

.styl is the file extension for stylus. Its just another css preprocessor like less or scss

http://learnboost.github.io/stylus/

I think this part is just a typo

So, it has found /assets/style.styl. Now it analyzes extension:

.sass extension? Use Sass then.