Day 22, with stack build system

[advent-of-code-16.git] / advent15.hs

diff --git a/advent15.hs b/advent15.hs
deleted file mode 100644 (file)
index 27793c1..0000000
--- a/advent15.hs
+++ /dev/null
@@ -1,41 +0,0 @@
-import Text.Parsec 
-import Text.ParserCombinators.Parsec.Number
-
-type Disk = (Int -> Bool)
-
-main :: IO ()
-main = do 
-    text <- readFile "advent15.txt" 
-    let disks = successfulParse $ parseIfile text
-    part1 disks
-    part2 disks
-
-part1 :: [Disk] -> IO ()
-part1 disks = print $ head $ filter (canFall disks) [0..]
-
-part2 :: [Disk] -> IO ()
-part2 disks = print $ head $ filter (canFall disks2) [0..]
-    where disks2 = disks ++ [diskify 7 11 0]
-
-canFall :: [Disk] -> Int -> Bool
-canFall ds i = all (\d -> (d i)) ds
-
-
-instructionFile = instructionLine `endBy` newline 
-instructionLine = diskify <$> (string "Disc #" *> int) 
-                          <*> (string " has " *> int)
-                          <*> (string " positions; at time=0, it is at position " *> int)
-                          <*  (string ".")
-
-diskify :: Int -> Int -> Int -> (Int -> Bool)
-diskify n size pos0 = (\i -> (size + n + pos0 + i) `mod` size == 0)
-
-parseIfile :: String -> Either ParseError [Disk]
-parseIfile input = parse instructionFile "(unknown)" input
-
-parseIline :: String -> Either ParseError Disk
-parseIline input = parse instructionLine "(unknown)" input
-
-successfulParse :: Either ParseError [a] -> [a]
-successfulParse (Left _) = []
-successfulParse (Right a) = a