#![feature(core_intrinsics)]

fn typename<T>(t: &T) -> &'static str {
    unsafe { std::intrinsics::type_name::<T>() }
}

fn main() {
    let mut iter = [0, 1, 2, 3].iter();
    let dyniter: &mut dyn Iterator<Item = &i32> = &mut [0, 1, 2, 3].iter();
    println!("static dispatch: {}", typename(&iter.cloned()));
    println!("dynamic dispatch: {}", typename(&dyniter.cloned()));
}