Question

How to use mutable references in Rust

Answer 1

fn change_x(n: &mut i8) {
  *n = 99;
}

fn main() {
  let mut x = 7;
  println!("x = {}", x);

  change_x(&mut x);

  println!("x = {}", x);
}





/*
run:

x = 7
x = 99

*/

 

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