advent is a collection of my solutions to the Advent of Code puzzles posted in December each
year. The solutions are implemented as functions in the modules (e.g.
y2018 below) and can be
cargo test with the appropriate scope selection
$ cargo test 2018::day1 running 2 tests test y2018::day1::examples ... ok test y2018::day1::solution ... ok
Results and Optionals are unwrapped on trust
Read lines from input
Parse delimited segments from the input