rust/src/test/compile-fail/class-implements-int.rs

class cat : int { //~ ERROR trait
  let meows: uint;
  new(in_x : uint) { self.meows = in_x; }
}

fn main() {
  let nyan = cat(0u);
}
rustc: "iface" -> "trait" in comments, error messages, and identifiers. (Also "interface" -> "trait" in error messages.) 2012-07-30 16:51:21 -05:00			`class cat : int { //~ ERROR trait`
Allow classes to implement ifaces Introduce syntax like: iface animal { ... } class cat implements animal { ... } to allow classes to implement ifaces. Casting classes to ifaces is not yet supported. ifaces that a class implements are not yet included in metadata. The syntax is subject to change, and may go away completely if we decide to use duck typing to relate classes with ifaces (see http://smallcultfollowing.com/babysteps/blog/2012/04/10/declared-vs-duckish-typing/ ) 2012-04-11 18:18:00 -05:00			`let meows: uint;`
			`new(in_x : uint) { self.meows = in_x; }`
			`}`

			`fn main() {`
			`let nyan = cat(0u);`
rustc: Switch to the new resolution pass 2012-07-06 21:06:58 -05:00			`}`