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-2.0.6.20	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.19	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.18	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.17	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.16	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.15	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.14	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.13	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.12	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.11	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.10	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.9	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.8	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.7	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.6	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.5	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.4	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.3	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.2	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.6.1	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs