Advent of code 2020

This year i'm doing advent of code in Rust, it's a new language for me. I've started learning using the Rust "book": https://doc.rust-lang.org/book/

Stuff i've learned

• cargo new projectname makes a new project
• Cargo.toml is the package.json of rust
• IntelliJ has a free plugin for rust, that will install upon opening the project directory (https://www.jetbrains.com/rust/)
• You can enable rustfmt (search in settings) on save to format your code automatically

Running

If you want to run this for yourself make sure to make a directory called input in the root of the project. Set an environment variable called ADVENT_SESSION with the session cookie of adventofcode.com If you run your day solution for the first time main.rs will download the input file to input/day##.txt automatically

Debugging

• Use triple shift run cargo command -> cargo run 1 to run day 1, or if no day is supplied it will ask for a day