use iter_vec::ExactSizedIterVec;
fn main() {
let content = vec![1, 2, 3, 4];
let content2 = vec![5, 6, 7, 8];
let mut iter_vec = ExactSizedIterVec::new();
iter_vec.push(&content);
iter_vec.push(&content2);
println!("{:#?} , len {}", iter_vec, iter_vec.len());
for x in iter_vec {
println!("x={}", x);
}
}