if you think replacing nil with Maybe buys you nothing, I highly recommend this video: "Why and how to avoid nil" https://www.destroyallsoftware.com/screencas

if you think replacing nil with Maybe buys you nothing, I highly recommend this video: "Why and how to avoid nil" https://www.destroyallsoftware.com/screencasts/catalog/how-and-why-to-avoid-nil https://www.destroyallsoftware.com/screencasts/catalog/how-a... you have to pay to see it, but it's terrific. (not mine, just a fan.)