Advent of Code Template

A rust template for Advent of Code.

Initial Setup

1. Clone this repo.
2. Setup your environment:
   • export AOC_YEAR=<year>
   • export AOC_SESSION=<Your session key>
   • export AOC_INPUT=<Your input directory>
3. Run ONCE: cargo build
4. Delete build.rs - you don't need to build again.

Daily Challenges

1. Download the day's file: cargo run -- init <day>. The file will be downloaded into the AOC_INPUT directory.
2. Write your code in the "day" files in src/solutions/dayX.rs
3. Build and run your code: cargo run -- run <day> [--part <part>] [--extra arg1 arg2 arg3] [--input path/to/input]
   • The arguments within [ ] are optional.
   • Skipping --part will run both part 1 and part 2.
   • Skipping --extra will give an empty Vec<T> of extra args.
   • Skipping --input will look for the download input in AOC_INPUT.

Notes

1. The module name is aoc-2020 but the template should work for any year
2. The solution files are part of the same crate and so, their dependencies are shared.
3. build.rs is very brittle and made only for the initial state of the repo.
4. The author in Cargo.toml is me. Change it if you want.

Warning!

Do not run build.rs after you have started writing your code.