https://github.com/petertseng/adventofcode-hs-2021

Solutions to https://adventofcode.com/2021 (all but day 23, unlikely to add day 23 due to lack of interest)
https://github.com/petertseng/adventofcode-hs-2021

advent-of-code advent-of-code-2021 haskell

Last synced: 30 days ago
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Solutions to https://adventofcode.com/2021 (all but day 23, unlikely to add day 23 due to lack of interest)

• Host: GitHub
• URL: https://github.com/petertseng/adventofcode-hs-2021
• Owner: petertseng
• License: apache-2.0
• Created: 2021-11-28T09:00:22.000Z (about 3 years ago)
• Default Branch: master
• Last Pushed: 2024-12-23T23:15:19.000Z (about 2 months ago)
• Last Synced: 2024-12-24T00:22:59.604Z (about 2 months ago)
• Topics: advent-of-code, advent-of-code-2021, haskell
• Language: Haskell
• Homepage: https://adventofcode.com/2021
• Size: 36.1 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Advent of Code

[![Build Status](https://travis-ci.org/petertseng/adventofcode-hs-2021.svg?branch=master)](https://travis-ci.org/petertseng/adventofcode-hs-2021)

These are my solutions to http://adventofcode.com

All solutions are written in Haskell.

## Input

In general, all solutions can be invoked in both of the following ways:

* Without command-line arguments, takes input on standard input.

* With 1+ command-line arguments, reads input from the first, which must be the path to an input file.

  Arguments beyond the first are ignored.

Some may additionally support other ways:

None yet.

## Closing thoughts

Day 16 was my first use of a monadic parser.

The code was much easier to read than the manual parser.

Day 19 was interesting since I think it's the first time I've used the Applicative (or Monad) instance of [].

## Past solutions

The [index](https://github.com/petertseng/adventofcode-common/blob/master/index.md) lists all years/languages I've ever done (or will ever do).