What are some examples of ownership in Rust?

What are some examples of ownership in Rust?

In Rust, ownership is a set of rules that governs how memory is managed. For example, when you create a variable, it owns the data it points to. If you assign that variable to another variable, the ownership moves to the new variable.

Can you give me a specific code example?

Sure! Here's a simple example:

fn main() {
    let s1 = String::from("Hello"); // s1 owns the String
    let s2 = s1; // ownership moves to s2
    // println!("{}", s1); // This would cause a compile-time error
    println!("{}", s2); // This works
}

What happens if I try to use s1 after moving ownership?

If you try to use s1 after moving ownership to s2, you'll get a compile-time error. Rust prevents you from accessing data that has been moved to ensure memory safety.

Are there any exceptions to this ownership rule?

Yes, Rust has a concept called borrowing, which allows you to temporarily use a value without taking ownership. You can borrow a reference to a value using &.