This strikes me as a perfect visual example of repl-driven development. I like how he starts very simple and slowly makes it more sophisticated, testing every step of the way.
If you've never tried it before, I highly recommend giving it a shot - it's extremely satisfying. I use Clojure, but other lisps also have fantastic repl environments that facilitate this style of development. "Bottom Up vs Top Down Design in Clojure"[0] is the talk that really made it clear to me how to design programs this way.
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[ 3.1 ms ] story [ 9.1 ms ] threadIf you've never tried it before, I highly recommend giving it a shot - it's extremely satisfying. I use Clojure, but other lisps also have fantastic repl environments that facilitate this style of development. "Bottom Up vs Top Down Design in Clojure"[0] is the talk that really made it clear to me how to design programs this way.
[0]https://www.youtube.com/watch?v=Tb823aqgX_0&list=PLZdCLR02gr...