This repository implements solutions to the puzzles in the 2021 Advent of Code using Elixir.
This was a vehicle to learn Elixir, so I presume not everything done here will be deemed idiomatic by language specialists.
Generally speaking, the solutions are organised predominantly for comprehension. They strive to arrive at an answer in a reasonable period of time, but they typically prioritise optimal understanding over optimal performance.
The examples are representative of my thinking and coding style.
The project requires elixir 1.17.1-otp-27, but any reasonably current version of
Elixir will likely work. I tend to code done the middle of any language
specification.
If you use an Elixir manager that responds to .tool-versions, you should
be switched to correct version automatically. I recommend ASDF
for those on platforms that support it.
The project does not have any external dependencies, so you only need to compile the source files to run them.
$ mix compile
- data: Puzzle input organised by day
- lib: Daily solutions and other homegrown utilities
- site: A local version of the instruction pages
- test: A simple set of regression tests
The module can be loaded into an interactive console using the standard command. Daily solutions can be run from the iex session using the following methods.
$ iex -S mix
> Day01.puzzle1()
> Day01.puzzle2()
> Day01.both()
To quit the interactive console, press Ctl + C and then type
a for abort.
The only tests are a set of checks to verify solved puzzles.
I often refactor my solutions for clarity (or as I learn new techniques in subsequent puzzles), so it is helpful to have these simple tests to give my refactors some confidence.
To execute the tests, simply execute the following command in your terminal from the project root.
$ mix test