Incrementing a counter Issues about docs

[lsgunnlsgunn]

Thanks so much for providing feedback on the documentation. We recently updated the Rust tutorials.
Hope you'll check them out and let us know if we missed anything.

As for the missing copy widget, we have a convention of not including it for examples that you aren't meant to copy and paste as-is, so I think that was intentional (but it might be too subtle of a convention 😁 ).