haskell: 2023 01
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cabal-version: 3.0
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-- The cabal-version field refers to the version of the .cabal specification,
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-- and can be different from the cabal-install (the tool) version and the
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-- Cabal (the library) version you are using. As such, the Cabal (the library)
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-- version used must be equal or greater than the version stated in this field.
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-- Starting from the specification version 2.2, the cabal-version field must be
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-- the first thing in the cabal file.
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cabal-version: 3.0
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-- Initial package description 'aoc2023' generated by
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-- 'cabal init'. For further documentation, see:
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-- http://haskell.org/cabal/users-guide/
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--
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-- The name of the package.
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name: aoc2023
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name: aoc2023
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version: 0.0.0.1
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synopsis: Solutions to Advent of Code 2023
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license: MIT
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author: Maciej Jur
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maintainer: maciej@kamoshi.org
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build-type: Simple
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-- The package version.
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-- See the Haskell package versioning policy (PVP) for standards
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-- guiding when and how versions should be incremented.
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-- https://pvp.haskell.org
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-- PVP summary: +-+------- breaking API changes
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-- | | +----- non-breaking API additions
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-- | | | +--- code changes with no API change
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version: 0.0.0.1
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-- A short (one-line) description of the package.
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-- synopsis:
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-- A longer description of the package.
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-- description:
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-- The license under which the package is released.
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license: MIT
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-- The file containing the license text.
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license-file: LICENSE
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-- The package author(s).
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author: Maciej Jur
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-- An email address to which users can send suggestions, bug reports, and patches.
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maintainer: maciej@kamoshi.org
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-- A copyright notice.
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-- copyright:
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build-type: Simple
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-- Extra doc files to be distributed with the package, such as a CHANGELOG or a README.
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extra-doc-files: CHANGELOG.md
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-- Extra source files to be distributed with the package, such as examples, or a tutorial module.
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-- extra-source-files:
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common warnings
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ghc-options: -Wall
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ghc-options: -Wall
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library
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-- Import common warning flags.
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import: warnings
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import: warnings
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-- Modules exported by the library.
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exposed-modules:
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Day01
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Day02
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hs-source-dirs: solutions
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-- Modules included in this library but not exported.
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-- other-modules:
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exposed-modules:
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Day01
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Day02
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-- LANGUAGE extensions used by modules in this package.
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-- other-extensions:
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-- Modules included in this library but not exported.
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-- other-modules:
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-- Other library packages from which modules are imported.
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build-depends: base ^>=4.17.2.0
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-- LANGUAGE extensions used by modules in this package.
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-- other-extensions:
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-- Directories containing source files.
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hs-source-dirs: src
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build-depends:
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base ^>=4.17.2.0,
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text ^>=2.1
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-- Base language which the package is written in.
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default-language: Haskell2010
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default-language: Haskell2010
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executable aoc2023
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-- Import common warning flags.
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import: warnings
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import: warnings
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-- .hs or .lhs file containing the Main module.
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main-is: Main.hs
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main-is: Main.hs
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-- Modules included in this executable, other than Main.
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other-modules:
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Utils
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other-modules:
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Utils
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-- LANGUAGE extensions used by modules in this package.
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-- other-extensions:
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-- LANGUAGE extensions used by modules in this package.
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-- other-extensions:
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-- Other library packages from which modules are imported.
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build-depends:
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base ^>=4.17.2.0,
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text ^>=2.1,
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aoc2023
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build-depends:
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base ^>=4.17.2.0,
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text ^>=2.1,
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aoc2023
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-- Directories containing source files.
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hs-source-dirs: app
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hs-source-dirs: app
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-- Base language which the package is written in.
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default-language: Haskell2010
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default-language: Haskell2010
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test-suite aoc2023-test
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-- Import common warning flags.
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import: warnings
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import: warnings
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-- Base language which the package is written in.
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default-language: Haskell2010
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-- Modules included in this executable, other than Main.
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-- other-modules:
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-- Modules included in this executable, other than Main.
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-- other-modules:
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-- LANGUAGE extensions used by modules in this package.
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-- other-extensions:
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-- LANGUAGE extensions used by modules in this package.
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-- other-extensions:
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-- The interface type and version of the test suite.
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type: exitcode-stdio-1.0
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-- The interface type and version of the test suite.
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type: exitcode-stdio-1.0
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hs-source-dirs: tests
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-- Directories containing source files.
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hs-source-dirs: test
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main-is: Main.hs
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-- The entrypoint to the test suite.
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main-is: Main.hs
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build-depends:
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base ^>=4.17.2.0,
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HUnit ^>=1.6,
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aoc2023
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-- Test dependencies.
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build-depends:
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base ^>=4.17.2.0,
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HUnit ^>=1.6,
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aoc2023
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default-language: Haskell2010
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@ -1,12 +1,11 @@
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module Main where
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import qualified Data.Text as T
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import Utils (readInput)
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import qualified Day01
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import qualified Day02
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main :: IO ()
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main = do
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text <- readInput 1
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putStrLn $ T.unpack text
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print . Day01.solveA . Day01.parse $ text
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print . Day01.solveB . Day01.parse $ text
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53
2023/haskell/solutions/Day01.hs
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53
2023/haskell/solutions/Day01.hs
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@ -0,0 +1,53 @@
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{-# LANGUAGE OverloadedStrings #-}
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module Day01 (parse, solveA, solveB) where
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import qualified Data.Text as T
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import Data.Text (Text)
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import Data.Char (isDigit)
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import Data.Maybe (mapMaybe, listToMaybe)
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parse :: Text -> [Text]
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parse = T.lines
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merge :: [Int] -> Int
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merge xs = 10 * head xs + last xs
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solveA :: [Text] -> Int
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solveA = sum . map (merge . convert)
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where
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convert :: Text -> [Int]
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convert = map (read . pure) . T.unpack . T.filter isDigit
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replaces :: [(Text, Int)]
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replaces =
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[ ("one", 1)
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, ("two", 2)
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, ("three", 3)
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, ("four", 4)
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, ("five", 5)
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, ("six", 6)
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, ("seven", 7)
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, ("eight", 8)
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, ("nine", 9)
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]
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solveB :: [Text] -> Int
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solveB = sum . map (merge . convert)
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where
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-- If `text` starts with `prefix` return `Just n`, otherwise return `Nothing`
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tryReplace :: Text -> (Text, Int) -> Maybe Int
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tryReplace text (prefix, n)
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| prefix `T.isPrefixOf` text = Just n
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| otherwise = Nothing
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-- If `firstChar` is a digit return it, otherwise try replace the prefix
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parsePrefix :: Text -> Maybe Int
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parsePrefix text
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| isDigit firstChar = Just . read . pure $ firstChar
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| otherwise = listToMaybe $ mapMaybe (tryReplace text) replaces
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where
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firstChar = T.head text
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convert :: Text -> [Int]
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convert = mapMaybe parsePrefix . filter (not . T.null) . T.tails
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module Day01 (someFunc) where
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someFunc :: IO ()
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someFunc = putStrLn "someFunc22"
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@ -1,24 +0,0 @@
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module Main (main) where
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import Test.HUnit
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import qualified System.Exit as Exit
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import qualified Day02
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day01 :: Test
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day01 = TestCase $ assertEqual "should return 1" 1 (Day02.xyz 0)
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day02 :: Test
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day02 = TestCase $ assertEqual "should return 0" 0 (Day02.xyz 0)
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tests :: Test
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tests = TestList
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[ TestLabel "day 1" day01
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, TestLabel "assda" day02
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]
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main :: IO ()
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main = do
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result <- runTestTT tests
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if failures result > 0 then Exit.exitFailure else Exit.exitSuccess
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29
2023/haskell/tests/Main.hs
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29
2023/haskell/tests/Main.hs
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{-# LANGUAGE OverloadedStrings #-}
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module Main (main) where
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import Test.HUnit
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import qualified System.Exit as Exit
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import qualified Day01
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day01 :: Test
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day01 = TestList
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[ TestCase $ assertEqual "should return 142" 142 (Day01.solveA inputA)
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, TestCase $ assertEqual "should return 281" 281 (Day01.solveB inputB)
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]
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where
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inputA = ["1abc2", "pqr3stu8vwx", "a1b2c3d4e5f", "treb7uchet"]
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inputB = ["two1nine", "eightwothree", "abcone2threexyz", "xtwone3four", "4nineeightseven2", "zoneight234", "7pqrstsixteen"]
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tests :: Test
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tests = TestList
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[ TestLabel "day01" day01
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]
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main :: IO ()
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main = isFailed . failures =<< runTestTT tests
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where
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isFailed count
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| count > 0 = Exit.exitFailure
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| otherwise = Exit.exitSuccess
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