HackerTube / Video
Depth-first search in APL
Dyalog

John Scholes builds a depth-first tree-search operator step by step in a Dyalog APL session. It covers higher-order functions and runs the search on the N-Queens problem.
HN commenters call it a beautiful, brilliant demonstration of APL's expressiveness and a model of clear narration.
5 Hacker News mentions · 2019–2021