https://github.com/glguy/advent2020

Advent of Code 2020 Haskell Solutions
https://github.com/glguy/advent2020

Last synced: 4 months ago
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Advent of Code 2020 Haskell Solutions

• Host: GitHub
• URL: https://github.com/glguy/advent2020
• Owner: glguy
• License: isc
• Created: 2020-12-01T05:28:56.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2020-12-29T02:51:40.000Z (about 4 years ago)
• Last Synced: 2024-05-08T20:15:27.622Z (9 months ago)
• Language: Haskell
• Size: 275 KB
• Stars: 16
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Advent of Code 2020

These are my Advent of Code 2020 solutions. I try to focus on making clean and documented Haskell solutions to each puzzle.

We'll be chatting about AoC on IRC all December. You can find AoC discussion on [freenode](https://freenode.net)'s `##adventofcode` and `#haskell` ([webchat](https://webchat.freenode.net/#haskell,##adventofcode))

## Building

I recommend installing `ghc` with `ghcup`.

```

$ curl https://get-ghcup.haskell.org -sSf | sh

```

I'm using `GHC 8.10.2` this year

```

$ ghcup install 8.10.2

$ ghcup set     8.10.2

```

`cabal-install-3` is the best way to get things built

```

$ cabal update

$ cabal build

```

## Running solutions

All the solutions take an optional command line argument that can be an input file name or `-` to read the input from `stdin`.

```

$ cabal run Day01

...

494475

267520550

```

## Common libraries used

* **containers** - Almost all of the solutions will benefit from having access to `Map` and `Set` types from this package.

* **megaparsec** - Each problem features a simple text-file format input. Parser combinators make it easy to define the simple parser needed to consume these inputs.

* **doctest** - Having checked examples in the documentation makes it easier to understand what code does and easy to add unit tests.