In Rust: what's the difference between clone() and to_owned() and when to use which?

Hello colleagues! I recently started learning Rust and I'm constantly confused about the clone() and to_owned() methods. They both seem to create a copy of data, but the documentation says they're different things. In practice, I see that clone() can be called on any type that implements the Clone trait, while to_owned() can only be called on types with the ToOwned trait. But isn't that the same thing? Here's a specific example that confuses me: ```rust let s: &str = "hello"; let a: String = s.to_owned(); let b: String = s.to_string(); // also works // But why can't I write s.clone() to get a String? // Because clone() returns &str, not String! ``` Another example: I'm working with slices. I have &[i32] and I want to get Vec. I can do slice.to_owned() — it works. But if I do slice