Coming from non-Haskell background, it took me a good while to undestand that `Just` is a constructor specific to the `Maybe` type. Found this for a quite nice

Coming from non-Haskell background, it took me a good while to undestand that `Just` is a constructor specific to the `Maybe` type. Found this for a quite nice answer: https://stackoverflow.com/a/18809252 https://stackoverflow.com/a/18809252