How to use channels for thread communication

Concurrency

2026-04-17T12:05:42+00:00

Create a channel with mpsc::channel, spawn a thread with the sender, and receive messages on the main thread using recv.

Use std::sync::mpsc::channel to create a sender and receiver, then pass the sender to a spawned thread to send messages back to the main thread.

use std::sync::mpsc;
use std::thread;

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