main.rs

use std::cell::Cell;

#[derive(Default)]
struct Wrapper(Cell<usize>);

impl Wrapper {
    fn increment_and_get(&self) -> usize {
        let &Wrapper(ref cell) = self;
        cell.replace(cell.get() + 1)
    }
}

fn main() {
    let obj: Wrapper = Default::default();
    print_both(obj.increment_and_get(), obj.increment_and_get());
}

fn print_both(left: usize, right: usize) {
    println!("({}, {})", left, right);
}