struct foo { a: int, b: int, c: int } impl foo : cmp::Eq { pure fn eq(&self, other: &foo) -> bool { (*self).a == (*other).a && (*self).b == (*other).b && (*self).c == (*other).c } pure fn ne(&self, 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)); }