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-2.2.1.159	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.158	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.157	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.156	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.155	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.154	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.153	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.152	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.151	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.150	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.149	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.148	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.147	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.146	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.145	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.144	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.143	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.142	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.141	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.2.1.140	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs