My solutions to the Advent of Code 2019 challenges in Haskell (because it's nice to have a challenge).
Run these with stack using the following syntax:
stack run <c> <f>
Where:
<c>
is the challenge, so for day 1, part 1 write1.1
<f>
is the input file path, e.g../src/day1_input.txt
Run the unit tests using stack test
.