#![allow(clippy::useless_vec)]
fn main() {
let vec1 = vec![1, 2, 3];
let vec2 = vec![4, 5, 6];
// `iter()` for vecs yields `&i32`. Destructure to `i32`. `iter()`
// only borrows `vec1` and its elements, so they can be used again
println!("2 in vec1: {}", vec1.iter().any(|&x| x == 2));
// `into_iter()` for vecs yields `i32`. No destructuring required.
// `into_iter()` does move `vec2` and its elements, so they cannot be
// used again
println!("2 in vec2: {}", vec2.into_iter().any(|x| x == 2));
}