Started Rust in Action MEAP.

1 files changed, 51 insertions, 0 deletions

diff --git a/meap/meap-code/ch5/ch5-sat-messaging/msg-with-refs/src/main.rs b/meap/meap-code/ch5/ch5-sat-messaging/msg-with-refs/src/main.rs
new file mode 100644
index 0000000..394f6cd
--- /dev/null
+++ b/meap/meap-code/ch5/ch5-sat-messaging/msg-with-refs/src/main.rs
@@ -0,0 +1,51 @@
+#[derive(Debug)]

+enum StatusCode {

+  Ok,

+}

+

+#[derive(Debug)]

+struct Mailbox {

+  messages: Vec<Message>,

+}

+

+type Message = String;

+

+#[derive(Debug)]

+struct CubeSat {

+  id: u64,

+  mailbox: Mailbox,

+}

+

+impl CubeSat {

+    fn recv(&mut self) -> Option<Message> {

+        self.mailbox.messages.pop()

+    }

+}

+

+struct GroundStation;

+

+impl GroundStation {

+    fn send(&self, to: &mut CubeSat, msg: Message) {

+        to.mailbox.messages.push(msg);

+    }

+}

+

+fn main() {

+    let base = GroundStation {};

+    let mut sat_a = CubeSat { id: 0, mailbox: Mailbox { messages: vec![] } };

+    let mut sat_b = CubeSat { id: 1, mailbox: Mailbox { messages: vec![] } };

+    let mut sat_c = CubeSat { id: 2, mailbox: Mailbox { messages: vec![] } };

+

+    println!("t0: {:?}", sat_a);

+

+    // sat_a.mailbox.messages.push(Message::from("hi"));

+

+    base.send(&mut sat_a, Message::from("hello there!"));

+

+    println!("t1: {:?}", sat_a);

+

+    let msg = sat_a.recv();

+    //println!("{:?}", msg);

+

+    println!("t2: {:?}", sat_a);

+}