One of the nice things about Rust's RFC process for new features is they answer questions like this: https://rust-lang.github.io/rfcs/3191-debugger-visualizer.h

One of the nice things about Rust's RFC process for new features is they answer questions like this: https://rust-lang.github.io/rfcs/3191-debugger-visualizer.html#prior-art https://rust-lang.github.io/rfcs/3191-debugger-visualizer.ht... edit: actually, I guess that focuses more on the debugger side, and less on the language side, so not a great answer to your question.