Literal string in a mutable variable can be replaced

---

• Use the mut keyword to mark a variable as mutable.
• That way we can replace the string...

examples/variables/mutable-string/src/main.rs

fn main() {
    let mut text = "Hello World!";
    println!("{}", text);

    text = "Something else";
    println!("{}", text);
}

Hello World!
Something else