kosmikus, 
Tonight (2023-07-12 at 1830 UTC), there's going to be another episode of the #Haskell Unfolder, about "learning by testing", "Boolean blindness", "parse don't Validate", "if-then-else considered harmful", or however you want to call it ... https://www.youtube.com/watch?v=2Y--K5Vjlyo&list=PLD8gywOEY4HaG5VSrKVnHxCptlJv2GAn7&index=7
