I also came here to mention this video. Watching the solution emerge line-by-line is a profound experience, and highly revelatory towards the kind of iterative

I also came here to mention this video. Watching the solution emerge line-by-line is a profound experience, and highly revelatory towards the kind of iterative problem-solving workflow possible in the Iversonian languages. In the same vein, John Scholes' collection of APL code in the Dfns workspace[0] is positively wonderful to read through. I think it's probably one of the finest repositories of annotated code ever assembled. [0]: http://dfns.dyalog.com/ http://dfns.dyalog.com/