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-2.0.0.5	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.0.4	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.0.3	tracks/haskell/exercises/allergies/examples/success-standard/src/Allergies.hs
trackler-2.0.0.2	tracks/haskell/exercises/allergies/src/Example.hs
trackler-2.0.0.1	tracks/haskell/exercises/allergies/src/Example.hs
trackler-2.0.0.0	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.4.1	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.4.0	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.3.0	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.2.1	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.2.0	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.1.2	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.1.1	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.1.0	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.0.1	tracks/haskell/exercises/allergies/src/Example.hs
trackler-1.0.0	tracks/haskell/exercises/allergies/src/Example.hs