inout_example.rs

// Source: https://gist.github.com/dns2utf8/82641ac26448a722f3022280c0ca455e

#[derive(Debug)]
struct A { value: isize }

impl A {
    fn borrow_value(&mut self) -> &mut isize {
        &mut self.value
    }
}

fn main() {
    let mut a = A { value: 42 };
    
    *a.borrow_value() = 23;
    
    println!("{:?}", a);
}

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