That's my take at Advent of Code 2021 using Elixir.
- Have Elixir and Erlang installed.
- Simply open a terminal and execute examples, like this:
iex -S mix
iex> Day1.run("data/1/example.txt")
iex> Day1.run("data/1/input.txt")
iex> Day1.run_part_two("data/1/input.txt")