Task

Take a combined set of elements and apply a function to each element.




fn echo(n: &i32) {
    println!("{}", n);
}
 
fn main() {
    let a: [i32; 5];
    a = [1, 2, 3, 4, 5];
    let _: Vec<_> = a.into_iter().map(echo).collect();
}