Channels
Rust channels have two parts: a Sender<T>
and a Receiver<T>
. The two parts
are connected via the channel, but you only see the end-points.
use std::sync::mpsc; use std::thread; fn main() { let (tx, rx) = mpsc::channel(); tx.send(10).unwrap(); tx.send(20).unwrap(); println!("Received: {:?}", rx.recv()); println!("Received: {:?}", rx.recv()); let tx2 = tx.clone(); tx2.send(30).unwrap(); println!("Received: {:?}", rx.recv()); }
mpsc
stands for Multi-Producer, Single-Consumer.Sender
andSyncSender
implementClone
(so you can make multiple producers) butReceiver
does not.send()
andrecv()
returnResult
. If they returnErr
, it means the counterpartSender
orReceiver
is dropped and the channel is closed.