A simple Game of Life implementation with a priority focus on object design.
It's probably a bit leaky of object references and hasn't had any go at optimizing the efficiency of the algorithm.
Conway comes with a very simple ASCII visualizer. It can be invoked as below, where the size argument determines the dimensions of the cell grid:
conway --size 25 --cells="10,2 9,3 8,3 9,4 10,4" --stats
conway -s 30 -c 2,3:3,3:3,2:2,2:3,4
When playing with the code itself, there's a sanity check Rake task:
rake glider
Please feel free to send feedback via the GitHub project or via email at mby AT mattyoho DOT com.