Advent Of Code in Rust

My rust solutions to Advent of Code puzzles.

I previously used cargo-aoc, but switched to a solution that combines all years instead, as cargo-aoc does not support workspaces.

Edit files (src/aoc{year}/day{day}.rs) to add solutions for new days/years. Then add references to the new files in src/lib.rs, src/main.rs, and tests/test.rs.

Running Solutions

I am using nightly features, so you need to run cargo build with the nightly toolchain.

This is now done by having the file rust-toolchain.toml in the root directory, which specifies the nightly toolchain.

[toolchain]
channel = "nightly"```

The file `.vscode/settings.json` is used to tell the rust-analyzer to use the nightly toolchain for the IDE.
And the entry in lib.rs adds the line:

```rust
#![feature(linked_list_cursors)]

to list all the nightly features that are used.

To run a solution:

cargo run
cargo run aoc2024
cargo run aoc2024::day01

To run a release version add --release to the above arguments

To run tests:

cargo test
cargo test aoc2024::day01

Visualisations

Visualisations are run with (e.g.) cargo run vis2024::day16, or just with a year argument, e.g. cargo run vis2024.

They have their own input files in input/vis{year}/day{day}.txt.

Both AOC and visualisation runners simply parse 2 numbers from the 1st command line argument, the year and the day. To run a visualisation, the runner looks for the string "vis" at the start of the first arg.

To implement a visualisation, add a new file to src/vis{year}/day{day}.rs, and add a reference to it in src/main.rs. The file should have a parse function that returns the input for the visualisation, and a viz function that takes the input and visualises it.

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