rust armanazi thread recv try_recv

To receive messages from a Rust std::sync::mpsc::Receiver in a non-blocking manner, you can use the recv and try_recv methods. The recv method blocks the current thread until a message becomes available, while the try_recv method attempts to receive a message without blocking. Here's an example of how you can use these methods:

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

fn main() {
    let (sender, receiver) = mpsc::channel();

    thread::spawn(move || {
        sender.send(42).unwrap();
    });

    // Blocking receive
    let received_value = receiver.recv().unwrap();
    println!("Received: {}", received_value);

    // Non-blocking receive
    let maybe_value = receiver.try_recv();
    if let Ok(received_value) = maybe_value {
        println!("Received: {}", received_value);
    } else {
        println!("No message available");
    }
}

In this example, a new thread is spawned to send a value (42) through the sender channel. The main thread then uses the recv method to block until it receives the value, and the try_recv method to non-blockingly attempt to receive a value. If a value is received, it is printed; otherwise, a message indicating that no message is available is printed.

Note that in this example, we're using unwrap to handle potential errors. In a real-world scenario, it's recommended to handle errors properly to ensure robustness in your code.