Rust Programming Tutorials, Guides & Best Practices

fn main() {
    let s1 = String::from("hello");
    let len = calculate_length(&s1);
    println!("The length of '{}' is {}.", s1, len);
}

fn calculate_length(s: &String) -> usize {
    s.len()
}

• Mutable Borrowing:

Rust’s ownership model supports various advanced patterns, such as:

• Ownership and Functions: Passing and returning ownership to manage resource lifecycles.
• Smart Pointers: Using types like Box, Rc, and RefCell to manage ownership and borrowing with more flexibility.
• Interior Mutability: Allowing mutation through immutable references using patterns like RefCell.