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61use std::{sync::mpsc, thread, time::Duration};
struct Queue {
first_half: Vec<u32>,
second_half: Vec<u32>,
}
impl Queue {
fn new() -> Self {
Self {
first_half: vec![1, 2, 3, 4, 5],
second_half: vec![6, 7, 8, 9, 10],
}
}
}
fn send_tx(q: Queue, tx: mpsc::Sender<u32>) {
// TODO: We want to send `tx` to both threads. But currently, it is moved
// into the first thread. How could you solve this problem?
thread::spawn(move || {
for val in q.first_half {
println!("Sending {val:?}");
tx.send(val).unwrap();
thread::sleep(Duration::from_millis(250));
}
});
thread::spawn(move || {
for val in q.second_half {
println!("Sending {val:?}");
tx.send(val).unwrap();
thread::sleep(Duration::from_millis(250));
}
});
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn threads3() {
let (tx, rx) = mpsc::channel();
let queue = Queue::new();
send_tx(queue, tx);
let mut received = Vec::with_capacity(10);
for value in rx {
received.push(value);
}
received.sort();
assert_eq!(received, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
}
}