Pass data between threads

use std::{thread, time};
use crossbeam_channel::unbounded;

fn main() {
  let (snd, rcv) = unbounded();
  let n_msgs = 5;
  crossbeam::scope(|s| {
    s.spawn(|_| {
      for i in 0..n_msgs {
        snd.send(i).unwrap();
        thread::sleep(time::Duration::from_millis(100));
      }
    });
  }).unwrap();
  for _ in 0..n_msgs {
    let msg = rcv.recv().unwrap();
    println!("Received {}", msg);
  }
}