rust/src/test/auxiliary/cci_class_4.rs

mod kitties {

struct cat {
  priv {
    mut meows : uint,
    fn meow() {
      error!("Meow");
      self.meows += 1u;
      if self.meows % 5u == 0u {
          self.how_hungry += 1;
      }
    }
  }

  mut how_hungry : int,
  name : ~str,

  fn speak() { self.meow(); }

  fn eat() -> bool {
    if self.how_hungry > 0 {
        error!("OM NOM NOM");
        self.how_hungry -= 2;
        return true;
    }
    else {
        error!("Not hungry!");
        return false;
    }
  }
}

    fn cat(in_x : uint, in_y : int, in_name: ~str) -> cat {
        cat {
            meows: in_x,
            how_hungry: in_y,
            name: in_name
        }
    }

}