[Animats]

The discussion of traits vs. classes glosses over a major difference - Rust traits have no associated data, and you cannot access the data of a parent trait. Trying to do object-oriented programming in Rust quickly leads to a mess. This is a huge problem if you try to write C++ in Rust.

There's no mention of ownership at all.

> Many libraries in Rust will offer two versions of an API, one which returns a Result or Option type and one of which panics, so that the interpretation of the error (expected exceptional case or programmer bug) can be chosen by the caller.

Huh? Usually, in Rust you just put .unwrap() or .expect() on a function call that returns a result if you want a panic.

More generally, most of the differences between Rust and C++ relate not on how to write imperative code, but how to lay out connections between data structures. Most hard problems in Rust relate to ownership design. That's true in C++, too, but you don't discover them until the program crashes at run time.