This is where I ended up (adjacency lists), but yes, it was quite unintuitive (because you need some central entity to manage adjacency lists, and that idea som

This is where I ended up (adjacency lists), but yes, it was quite unintuitive (because you need some central entity to manage adjacency lists, and that idea somehow eluded me for a long time). Rust really doesn't like updating references (and anything non-hierarchical in general).