> Rust as it was written in 2015 still compiles on a modern Rust compiler... but it is no longer idiomatic Rust.
The changes since the 2015 edition have all been relatively minor in terms of idiomatic code I think. I mean sure, you can use the '?' operator instead doing a manual match and return, but most of the changes have just been making the compiler more permissive in terms of what it accepts.
The only new concept to be learnt would be async-await, and that should be familiar to most from other languages and only applies if you're doing IO.
The changes since the 2015 edition have all been relatively minor in terms of idiomatic code I think. I mean sure, you can use the '?' operator instead doing a manual match and return, but most of the changes have just been making the compiler more permissive in terms of what it accepts.
The only new concept to be learnt would be async-await, and that should be familiar to most from other languages and only applies if you're doing IO.