struct cat { priv mut meows : uint, how_hungry : int, } impl cat { fn meow_count() -> uint { self.meows } } fn cat(in_x : uint, in_y : int) -> cat { cat { meows: in_x, how_hungry: in_y } } fn main() { let nyan : cat = cat(52u, 99); assert (nyan.meow_count() == 52u); }