Alternative ways of adding JavaScript libraries to a Ruby on Rail's project.

I accidentially adopting the stratgey pattern for a recent project had me working on task extracting lists from a number of websites. My initial solution was to have a single class. It didn’t take long before it become verbose, with a number of branching if/else statements depending on the site being extracted. While my solution worked OK for one or two sites. I wasn’t going to be maintainable for 100’s of sites.

The inspiration of this blog post has been a recent question on Stack Overflow about whether Ruby passes the method variables by value or by reference.