[Rust] Borrowing Mutably for Types

Different types have different forms

The String Type

The Integer Type

Function:

fn add_function(num_sort_operations: &mut i32) {
    *num_sort_operations += 1;
}

fn main() {
    let mut num_sort_operations = 0;
    add_function(&mut num_sort_operations);
}

Closure:

fn main() {
    let mut num_sort_operations = 0;
    (|| num_sort_operations += 1)();
}