Well today's #AdventOfCode (Day 7) got a bit out of hand. I decided to do it in #Rust and implemented it with a zero copy approach but in the the end the file names weren't even needed. Nonetheless it was a fun exercise building a tree with parent-child links in Rust with just the standard library. https://github.com/wezm/advent-of-code/blob/master/2022/src/bin/day7.rs