Rust code with comments describing references for modification of a value

reference.rs

fn main() {
    // This function modifies the values passed in
    // Takes in a Vec with types i32 as a reference & and mutable
    fn addition(in_vec: &mut Vec<i32>) {
        // We've already referenced in_vec so no need for &
        for x in in_vec {
            // We need to dereference using *
            *x = *x + 10;

        }
    }

    // Mutable vector to be passed in to our function
    let mut test_vec: Vec<i32> = vec![1, 2, 3];


    // Call our function and pass in referenced mutable version of test_vec
    addition(&mut test_vec);

    // Print our results
    for i in test_vec {
        println!("Result {}", i);
    }

}

//Outputs:
//Running `target/debug/learn`
//Result 11
//Result 12
//Result 13