Rust 并发篇 (十九)：无畏并发 (Fearless Concurrency) 与消息传递

## 1. 多生产者单消费者 (MPSC) 通道 “不要通过共享内存来通信，而要通过通信来共享内存”： ```rust use std::sync::mpsc; use std::thread; use std::time::Duration; fn main() { let (tx, rx) = mpsc::channel(); thread::spawn(move || { let val = String::from("hello from worker"); tx.send(val).unwrap(); }); let received = rx.recv().unwrap(); println!("主线程收到消息: {}", received); } ```