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Advent of Code

These are my Elixir solutions for Advent of Code.

If you wanna use them for your inputs (do not recommend it, solve it yourself!) you can save your session cookie from Advent of Code website in the config/config.exe or export it into your environment (I use direnv to export it automatically):

import Config

config :advent_of_code, session_id: "<your-session-here>"

Then you can run

mix advent_of_code.refresh_inputs

which will re-download all input files for previous years for your account. Be aware that tests won't work because the results are hardcoded for my inputs.

You can run any task you want with this command:

mix advent_of_code --year <year> --day <day> --part1 --part2

If you want to solve the task yourself you can delete my file (don't worry it is still in git so you can restore it whenever you want) and run this command:

mix advent_of_code.init --year <year> --day <day>

You would run the same command if you would like to solve some task I didn't yet solve.

During development the --test flag can be handy - it runs the task with test input instead so it is easier to debug.

mix advent_of_code --year <year> --day <day> --part1 --part2 --test

If you would like to see how fast the solutions are you can run the included benchmarks. By default it will just run the solutions side by side but if you develop different solutions you can override the benchmark/0 function for any day and run different solutions side by side (see /lib/2021/day06.ex:156 for example)

mix advent_of_code.bench --year <year> --day <day>

All commands have default values for year and day set to current year (if current month is December otherwise it is last year) and day so if you are solving the tasks same day they are published you can omit those arguments.