Try It Yourself - SyntaxStudy Editor

HTML / CSS / JS

use std::thread;
use std::time::Duration;

fn main() {
    // Spawn a thread with a move closure
    let data = vec![1, 2, 3, 4, 5];

let handle = thread::spawn(move || {
        println!("thread sees: {:?}", data);
        let sum: i32 = data.iter().sum();
        sum   // return value from the thread
    });

// Main thread continues
    println!("main thread is running");

// Wait for the spawned thread to finish and get its result
    let sum = handle.join().expect("thread panicked");
    println!("thread computed sum = {sum}");

// Spawn multiple threads
    let handles: Vec<_> = (0..5).map(|i| {
        thread::spawn(move || {
            thread::sleep(Duration::from_millis(50 * i));
            println!("thread {i} done");
            i * i
        })
    }).collect();

let results: Vec<u64> = handles.into_iter()
        .map(|h| h.join().unwrap())
        .collect();

println!("squares: {:?}", results);

// thread::Builder for named threads
    let builder = thread::Builder::new().name("worker".to_string());
    let worker = builder.spawn(|| {
        println!("I am thread '{}'", thread::current().name().unwrap_or("?"));
    }).unwrap();
    worker.join().unwrap();
}