intoiter.rs

fn process<I, T>(container: I)
where
T: std::fmt::Display,
I: IntoIterator<Item=T>
{
    for data in container {
        println!("{}", data);
    }
}


fn main() {
  let v = vec![1,2,3];
  process(&v);
}

fn process<I, T>(container: &I)编译不过去。。