Better main

src/Caesar.hs

@@ -4,13 +4,14 @@ import Data.Char
 import Data.Maybe
 
 alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+wtf = '¿'
 
 downGrade :: String -> String
 downGrade = fmap (clip . toUpper)
   where
     clip c | elem (toUpper c) alphabet = toUpper c
     clip ' ' = ' '
-    clip _ = '_'
+    clip _ = wtf
 
 encode :: Int -> String -> String
 encode key msg = unwords $ encodeWord key <$> (words $ downGrade msg)
@@ -25,7 +26,7 @@ encodeWord :: Int -> String -> String
 encodeWord k = fmap (substitute $ mapping k)
 
 substitute :: [(Char,Char)] -> Char -> Char
-substitute m e = fromMaybe '_' $ lookup e m
+substitute m e = fromMaybe wtf $ lookup e m
 
 mapping :: Int -> [(Char,Char)]
 mapping k = zip alphabet (alphabet `rotateBy` k)

src/Main.hs

@@ -4,4 +4,10 @@ import Caesar
 
 -- Incredible!
 main :: IO ()
-main = putStrLn $ decode 1 $ encode 1 "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam rhoncus elit ac nunc ornare fringilla. Sed pharetra eros pulvinar pellentesque aliquam. Donec in pretium elit. Aliquam vulputate tincidunt venenatis. Morbi quis metus nisi. Vestibulum nunc est, fringilla vel posuere sit amet, ultricies at nulla. Nunc bibendum odio vel augue mollis congue. Mauris vitae gravida quam. Vivamus dictum vehicula nisl non egestas. Cras ultrices ullamcorper diam non lacinia. Sed mollis quam augue, ac dictum erat auctor sit amet."
+main = do
+  let t = "I like strawberries!"
+  putStrLn t
+  putStrLn $ encode 3 t
+  putStrLn $ id' 3 t
+
+id' n = (decode n) . (encode n)