Ограничил список доступных функций

lab3/src/Lib.hs

@@ -1,12 +1,14 @@
 module Lib
-    -- ( 
-        -- createAlphabetFromText,
-        -- encryptCaesar,
-        -- decryptCaesar,
-        -- textToBits,
-        -- bitsToText,
-        -- encodePixel
-    -- ) 
+    ( 
+        createAlphabetFromText,
+        encryptCaesar,
+        decryptCaesar,
+        textToBits,
+        bitsToText,
+        encodePixel,
+        extractShift,
+        extractBitsFromImage
+    ) 
     where
 
 import Codec.Picture
@@ -48,8 +50,8 @@ textToBits text = VU.fromList $ concatMap charToBits text
 charToBits :: Char -> [Int]
 charToBits c = [if testBit (ord c) i then 1 else 0 | i <- [7,6..0]]
 
-intToBits :: Int -> [Int]
-intToBits n = [if testBit n i then 1 else 0 | i <- [31,30..0]]
+-- intToBits :: Int -> [Int]
+-- intToBits n = [if testBit n i then 1 else 0 | i <- [31,30..0]]
 
 bitsToText :: VU.Vector Int -> String
 bitsToText bits
@@ -62,12 +64,6 @@ bitsToInt bits =
     where
         len = VU.length bits - 1
 
-setLastBits :: VU.Vector Int -> VU.Vector Int -> VU.Vector Int
-setLastBits byte newBits = byte VU.// updates
-  where
-    newBitsLastIndex = VU.length newBits - 1
-    updates = [(7 - i, newBits VU.! (newBitsLastIndex - i)) | i <- [0..newBitsLastIndex]]
-
 intToWord8 :: Int -> Word8
 intToWord8 x = fromIntegral x