The strange joy of recursive/inductive definitions that look ill-founded but aren't

"An ordinal is a downward-closed set of ordinals" thanks, I love it

Also "data Mu f = In (f (Mu f))" which took me forever to figure out what it did

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Mastodon @ SDF

"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko