{-# LANGUAGE GeneralizedNewtypeDeriving #-} {-# LANGUAGE AllowAmbiguousTypes #-} module Util (card, fromEnum', module U) where import qualified Data.List as L import Numeric.Natural import "util" Util as U card :: ∀ a . (Bounded a, Enum a) => Natural card = L.genericLength [minBound @a..] fromEnum' :: (Bounded a, Enum a) => a -> Natural fromEnum' a = L.genericLength [minBound..a] - 1