40 lines
1.1 KiB
Haskell
40 lines
1.1 KiB
Haskell
module Aoc where
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aocMain' :: (Show p, Show a) => ([String] -> p) -> (p -> (a, c)) -> (p -> c -> a) -> IO ()
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aocMain' parseFile part1 part2 = do
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contents <- readFile "input.txt"
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let input = parseFile $ lines contents
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let (part1Answer, data') = part1 input
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putStrLn $ "Part 1: " ++ show part1Answer
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let part2Answer = part2 input data'
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putStrLn $ "Part 2: " ++ show part2Answer
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passthrough :: a -> (a, a)
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passthrough a = (a, a)
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aocMain :: Show p => ([String] -> p) -> (p -> Int) -> (p -> Int) -> IO ()
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aocMain parseFile part1 part2 = aocMain' parseFile ((,()) . part1) (const' part2)
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const' :: (a -> b) -> a -> c -> b
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const' f a _ = f a
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enumerate :: [a] -> [(Int, a)]
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enumerate xs = zip [0..length xs] xs
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unimplemented :: Show p => p -> Int
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unimplemented = error . show
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pair :: [a] -> (a, a)
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pair as = let [a1, a2] = as in (a1, a2)
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triplet :: [a] -> (a, a, a)
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triplet as = let [a1, a2, a3] = as in (a1, a2, a3)
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single :: [a] -> a
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single as = let [a] = as in a
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both :: (a -> b) -> (a, a) -> (b, b)
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both f (a, b) = (f a, f b)
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lastSplit :: Int -> [a] -> ([a], [a])
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lastSplit n as = splitAt (length as - n) as |