Improve code prettiness

VL2/content/VL2_filter2.tex

@@ -6,7 +6,7 @@ filter :: (a -> Bool) -> [a] -> [a]
 \pause
 \begin{haskellcode}
 filter :: (a -> Bool) -> [a] -> [a]
-filter f [] = []
+filter f []   = []
 filter f (x:xs)
   | f x       = x : filter f xs
   | otherwise = filter f xs

VL2/content/VL2_fold1.tex

@@ -6,20 +6,20 @@ sum :: [Int] -> Int
 \pause
 \begin{haskellcode}
 sum :: [Int] -> Int
-sum [] = 0
+sum []     = 0
 sum (x:xs) = x + sum xs
 \end{haskellcode}
 \pause
 \ifger{Oder das Produkt:}{Or the product:}
 \begin{haskellcode}
 prod :: [Int] -> Int
-prod [] = 1
+prod []     = 1
 prod (x:xs) = x * prod xs
 \end{haskellcode}
 \pause
 \ifger{Oder die Länge:}{Or the length:}
 \begin{haskellcode}
 length :: [a] -> Int
-length [] = 0
+length []     = 0
 length (x:xs) = 1 + length xs
 \end{haskellcode}

VL2/content/VL2_map2.tex

@@ -1,7 +1,7 @@
 \ifger{Lösung:}{Solution:}
 \begin{haskellcode}
 addTwo :: [Int] -> [Int]
-addTwo [] = []
+addTwo []     = []
 addTwo (x:xs) = (x + 2) : addTwo xs
 \end{haskellcode}
 \pause
@@ -9,14 +9,14 @@ addTwo (x:xs) = (x + 2) : addTwo xs
 \pause
 \begin{haskellcode}
 square :: [Int] -> [Int]
-square [] = []
+square []     = []
 square (x:xs) = (x * x) : square xs
 \end{haskellcode}
 \pause
 \ifger{Jetzt wollen wir den Betrag jedes Elements:}{Now we want the absolute of every element:}
 \begin{haskellcode}
 absList :: [Int] -> [Int]
-absList [] = []
+absList []     = []
 absList (x:xs) = (abs x) : absList xs
 \end{haskellcode}
 \pause