1 files changed, 106 insertions, 0 deletions
diff --git a/meap/ch4/src/main.rs b/meap/ch4/src/main.rs
new file mode 100755
index 0000000..fd00fef
--- /dev/null
+++ b/meap/ch4/src/main.rs
@@ -0,0 +1,106 @@
+//#[derive(Debug, Clone, Copy)]
+//struct CubeSat {
+//    id: u64,
+//}
+//
+//impl CubeSat {
+//    fn recv(&self, mailbox: &mut Mailbox) -> Option<Message> {
+//        mailbox.deliver(&self)
+//    }
+//}
+//
+////impl Copy for CubeSat {}
+////
+////impl Clone for CubeSat {
+////    fn clone(&self) -> Self {
+////        CubeSat {
+////            id: self.id,
+////        }
+////    }
+////}
+//
+//#[derive(Debug, Clone, Copy)]
+//enum StatusMessage {
+//    Ok,
+//}
+//
+////impl Copy for StatusMessage {}
+////
+////impl Clone for StatusMessage {
+////    fn clone(&self) -> Self {
+////        *self
+////    }
+////}
+//
+//#[derive(Debug)]
+//struct Mailbox {
+//    messages: Vec<Message>,
+//}
+//
+//impl Mailbox {
+//    fn post(&mut self, msg: Message) {
+//        self.messages.push(msg);
+//    }
+//
+//    fn deliver(&mut self, recipient: &CubeSat) -> Option<Message> {
+//        for i in 0..self.messages.len() {
+//            if self.messages[i].to == recipient.id {
+//                let msg = self.messages.remove(i);
+//                return Some(msg);
+//            }
+//        }
+//
+//        None
+//    }
+//}
+//
+//struct GroundStation {}
+//
+//impl GroundStation {
+//    fn send(&self, mailbox: &mut Mailbox, msg: Message) { 
+//        mailbox.post(msg);
+//    }
+//
+//    fn connect(&self, sat_id: u64) -> CubeSat {
+//        CubeSat {
+//            id: sat_id,
+//        }
+//    }
+//}
+//
+//#[derive(Debug)]
+//struct Message {
+//    to: u64,
+//    content: String,
+//}
+//
+//fn check_status(sat_id: CubeSat) -> StatusMessage {
+//    StatusMessage::Ok
+//}
+//
+//fn fetch_sat_ids() -> Vec<u64> {
+//    vec![1, 2, 3]
+//}
+//
+//fn main() {
+//    let sat_a = CubeSat {
+//        id: 0,
+//    };
+//
+//    let a_status = check_status(sat_a.clone());
+//    println!("a: {:?}", a_status);
+//
+//    let a_status = check_status(sat_a.clone());
+//    println!("a: {:?}", a_status);
+//}
+//
+
+use std::rc::Rc;
+
+#[derive(Debug)]
+struct GroundStation {}
+
+fn main() {
+    let base: Rc<GroundStation> = Rc::new(GroundStation {});
+    dbg!(base);
+}