Advent of Code 2020

Solutions to the exercises at https://adventofcode.com/2020/.

This year I'm playing with minimizing scaffolding by generating each day as a subproject within a shared workspace.

Initial setup

Log in to the AoC site with whatever method you prefer. Then use the browser's dev tools to inspect the cookies. You want the one called session. Configure this tool with it, so it can download the inputs for you.

cargo run -- config set --session YOUR_SESSION_KEY

Per-day setup

cargo run -- init

This will create a new sub-crate and add it to the workspace, as well as downloading the problem's input. Inputs are saved to a canonical directory. The sub-crate will be named for the day in question, so it can then be run like

cargo run -p day01 -- --part2