Advent

My solutions for the annual Advent of Code challenge.

Each year builds a new advent<year> executable that outputs the solutions to each puzzle on stdout.

Building

I use stack as the build tool.

I wrote a script to generate all of the code needed to setup a challenge for a new year:

$ make year=2020

Replace year=<your-year-here> to generate the code for a new challenge.

The library is structured so that each solution is its own module, eg:

src/Advent/Y2020/Day1/Part1.hs

Each module defines a solution :: IO () function that prints the answer to stdout.

Shared code goes into the level under Advent as appropriate.

Each module gets a corresponding test module under test/.

The solution is built into an executable to conveniently print out all the answers under, eg: app/Y2020/Main.hs