make use of <$>

src/Codec/Binary/UTF8/Debug.hs

@@ -14,5 +14,4 @@ utf8FromIso :: [Int] -> [Word8]
 utf8FromIso = encode . map toEnum
 
 ppUtf8 :: [Int] -> IO ()
-ppUtf8 = print . map (\f -> f "") . map showHex . utf8FromIso
-
+ppUtf8 = print . map (($ "") . showHex) . utf8FromIso

src/Data/Terminfo/Eval.hs

@@ -42,7 +42,7 @@ pop = do
 
 readParam :: Word -> Eval CapParam
 readParam pn = do
-    !params <- get >>= return . evalParams
+    !params <- evalParams <$> get
     return $! genericIndex params pn
 
 push :: CapParam -> Eval ()
@@ -68,7 +68,7 @@ writeCapOps ops = mapM_ writeCapOp ops
 
 writeCapOp :: CapOp -> Eval ()
 writeCapOp (Bytes !offset !count) = do
-    !cap <- get >>= return . evalExpression
+    !cap <- evalExpression <$> get
     let bytes = Vector.take count $ Vector.drop offset (capBytes cap)
     Vector.forM_ bytes $ tell.writeWord8
 writeCapOp DecOut = do

src/Data/Terminfo/Parse.hs

@@ -128,7 +128,7 @@ paramEscapeParser = do
 literalPercentParser :: CapParser BuildResults
 literalPercentParser = do
     _ <- char '%'
-    startOffset <- getState >>= return . nextOffset
+    startOffset <- nextOffset <$> getState
     incOffset 1
     return $ BuildResults 0 [Bytes startOffset 1] []
 
@@ -154,7 +154,7 @@ incrementOpParser = do
 pushOpParser :: CapParser BuildResults
 pushOpParser = do
     _ <- char 'p'
-    paramN <- digit >>= return . (\d -> read [d])
+    paramN <- read . pure <$> digit
     incOffset 2
     return $ BuildResults (fromEnum paramN) [PushParam $ paramN - 1] []
 
@@ -299,7 +299,7 @@ compareOpParser
 bytesOpParser :: CapParser BuildResults
 bytesOpParser = do
     bytes <- many1 $ satisfy (/= '%')
-    startOffset <- getState >>= return . nextOffset
+    startOffset <- nextOffset <$> getState
     let !c = length bytes
     !s <- getState
     let s' = s { nextOffset = startOffset + c }

src/Graphics/Vty/Input/Loop.hs

@@ -137,7 +137,7 @@ readFromDevice = do
         threadWaitRead fd
         bytesRead <- fdReadBuf fd bufferPtr (fromIntegral maxBytes)
         if bytesRead > 0
-        then fmap (map $ chr . fromIntegral) $ peekArray (fromIntegral bytesRead) bufferPtr
+        then (map $ chr . fromIntegral) <$> peekArray (fromIntegral bytesRead) bufferPtr
         else return []
     when (not $ null stringRep) $ logMsg $ "input bytes: " ++ show stringRep
     return stringRep