use std::thread;

fn main() {
    let data = vec![42; 10];
    let more_data = "Important data".to_string();
    let ret : Vec<_> = std::iter::repeat((data.clone(), more_data.clone()))
        .take(5)
        .map(|(data, more_data)| {
            thread::spawn(|| foo(data, more_data));
        }).collect();
    ret.for_each(|x| {x.join().unwrap()});
}

fn foo(_data: Vec<u64>, _more_data: String) {
    println!("Hello");
}