Contents

module Allergies (Allergen(..), isAllergicTo, allergies) where
import Data.Bits (testBit)
data Allergen = Eggs
              | Peanuts
              | Shellfish
              | Strawberries
              | Tomatoes
              | Chocolate
              | Pollen
              | Cats
              deriving (Show, Eq, Enum)

isAllergicTo :: Allergen -> Int -> Bool
isAllergicTo allergen code = testBit code (fromEnum allergen)

allergies :: Int -> [Allergen]
allergies code = filter (`isAllergicTo` code) [Eggs ..]

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.179	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.178	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.177	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.176	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.175	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.174	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.173	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.172	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.171	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.170	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.169	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.167	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.166	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.165	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.164	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.163	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.162	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.161	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.160	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs