Jez learns Rust by writing a Lexer

My friend Jez joins us and we talk about his new implementation of my Cell programming language in Rust, which is his first from-scratch Rust project. You can find Jez at https://www.jezuk.co.uk/ and follow him at @jezhiggins@mastodon.me.uk More info: https://artificialworlds.net/blog/2025/09/19/jez-learns-rust