That's a funny example, because Rust's `String` does implement `Add` as concatenation! Many think this was a mistake though. https://doc.rust-lang.org/std/stri

That's a funny example, because Rust's `String` does implement `Add` as concatenation! Many think this was a mistake though. https://doc.rust-lang.org/std/string/struct.String.html#impl-Add%3C%26%27_%20str%3E https://doc.rust-lang.org/std/string/struct.String.html#impl...