mpsc stands for multiple producer, single consumer.

// handle.join().unwrap();

fn main() { let (tx, rx) = mpsc:: channel(); }
let val = String:: from(" hi"); tx.send( val). unwrap();
let received = rx.recv(). unwrap(); println!(" Got: {}", received); }

let tx1 = mpsc::Sender:: clone(& tx);
use std:: sync::Mutex; 

fn main() { 
  let m = Mutex::new(5); 
  { 
    let mut num = m.lock().unwrap(); 
    *num = 6; x 
  } 
  println!(" m = {:?}", m); 
}

When the channel is closed, iteration ends.

Sources

• Rust by Example
• A half-hour to learn Rust