structs.rs

struct Bob {
    priv name : ~str,
    priv age : int
}

impl Bob {
    fn new(name: ~str, age: int) -> Bob {
        Bob { name: name, age: age }
    }

    fn get_older(&self) -> () {
        // This should work as long as self is mutable right??
        // Obviously it doesn't though (compile error)
        self.age += 1;
    }
}


fn main() -> () {
    let mut bob = Bob::new(~"Roberto", 35);
}

To post an answer to my issue above (thanks to strcat in the rust irc), I should have been using mutable self such as:

impl Bob {
    fn get_older(&mut self) -> () {
        self.age += 1;
    }
}