{-# LANGUAGE NoImplicitPrelude #-}
module Main where
import Prelude
main :: IO ()
main = putStrLn $ if test then "SUCCESS" else "FAILURE"
newtype Name = Name { unName :: String } deriving (Eq)
data Hero = Hero { firstName :: Name, lastName :: Name }
test :: Bool
test = let ironMan = Hero (Name "Tony") (Name "Stark") in
and [ firstName ironMan == Name "Tony"
, lastName ironMan == Name "Stark"
, fullName ironMan == Name "Tony Stark"
]
-- TODO: This program doesn't compile. Define the missing function(s) incl. type signatures!
{-# LANGUAGE NoImplicitPrelude #-}
module Main where
import Prelude
main :: IO ()
main = putStrLn $ if test then "SUCCESS" else "FAILURE"
newtype Name = Name { unName :: String } deriving (Eq)
data Hero = Hero { firstName :: Name, lastName :: Name }
test :: Bool
test = let ironMan = Hero (Name "Tony") (Name "Stark") in
and [ firstName ironMan == Name "Tony"
, lastName ironMan == Name "Stark"
, fullName ironMan == Name "Tony Stark"
]
-- DONE
fullName :: Hero -> Name
fullName hero = Name $ unName (firstName hero) <> " " <> unName (lastName hero)