From a13e3cd07f86e8668a326bae98568cced61f5015 Mon Sep 17 00:00:00 2001
From: mo8it <mo8it@proton.me>
Date: Mon, 1 Jul 2024 11:23:40 +0200
Subject: threads3 solution

---
 solutions/20_threads/threads3.rs | 67 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 66 insertions(+), 1 deletion(-)

(limited to 'solutions/20_threads')

diff --git a/solutions/20_threads/threads3.rs b/solutions/20_threads/threads3.rs
index 4e18198..cd2dfbe 100644
--- a/solutions/20_threads/threads3.rs
+++ b/solutions/20_threads/threads3.rs
@@ -1 +1,66 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+use std::{sync::mpsc, thread, time::Duration};
+
+struct Queue {
+    length: u32,
+    first_half: Vec<u32>,
+    second_half: Vec<u32>,
+}
+
+impl Queue {
+    fn new() -> Self {
+        Self {
+            length: 10,
+            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>) {
+    // Clone the sender `tx` first.
+    let tx_clone = tx.clone();
+    thread::spawn(move || {
+        for val in q.first_half {
+            println!("Sending {val:?}");
+            // Then use the clone in the first thread. This means that
+            // `tx_clone` is moved to the first thread and `tx` to the second.
+            tx_clone.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();
+        let queue_length = queue.length;
+
+        send_tx(queue, tx);
+
+        let mut total_received: u32 = 0;
+        for received in rx {
+            println!("Got: {received}");
+            total_received += 1;
+        }
+
+        println!("Number of received values: {total_received}");
+        assert_eq!(total_received, queue_length);
+    }
+}
-- 
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