gistfile1.rs

trait Visior<T>{
	fn visit(&self, t: T);
}
struct PrintVisitor;
impl PrintVisitor {
	fn print(&self, s: ~str){
		println(s);
	}
}
impl Visior<~str> for PrintVisitor {
	fn visit(&self, s: ~str){
		print(s);
	}
}


struct SomeObject;
impl SomeObject {
	fn do_sth(&self, v: &Visior<~str>, s: ~str){
		v.visit(s);
	}
}

fn main(){
let v = PrintVisitor;
let o = SomeObject;

o.do_sth(v, ~"Hello");
}

/home/maik/hello.rs:30:9: 30:10 error: mismatched types: expected `&Visior<~str>` but found `PrintVisitor` (expected trait Visior but found struct PrintVisitor)
/home/maik/hello.rs:30 o.do_sth(v, ~"Hello");