struct foo { a: int, b: int, c: int } impl foo : cmp::Eq { pure fn eq(&&other: foo) -> bool { self.a == other.a && self.b == other.b && self.c == other.c } pure fn ne(&&other: foo) -> bool { !self.eq(other) } } const x : foo = foo { a:1, b:2, c: 3 }; const y : foo = foo { b:2, c:3, a: 1 }; const z : &foo = &foo { a: 10, b: 22, c: 12 }; fn main() { assert x.b == 2; assert x == y; assert z.b == 22; io::println(fmt!("0x%x", x.b as uint)); io::println(fmt!("0x%x", z.c as uint)); }