IMHO, his Haskell style is a little weird and not really the typical (or the best). The dailyCost function is a particularly ghastly example of bad layout and v

IMHO, his Haskell style is a little weird and not really the typical (or the best). The dailyCost function is a particularly ghastly example of bad layout and visual code organization. Then there are things like map (\(x,y) -> x) reservationFixedCosts instead of map fst reservationFixedCosts I'm also not a big fan of extensive use of list comprehensions; I'd prefer using "map" instead wherever I can. The whole thing could definitely look much cleaner.