homework: use hash map and implement Debug trait

smart-house/src/device.rs

@@ -1,5 +1,6 @@
 use std::fmt::Display;
 
+#[derive(Debug)]
 pub enum Device {
     Thermometer(super::Thermometer),
     PowerSocket(super::PowerSocket),
@@ -20,6 +21,13 @@ impl Device {
     pub fn print_status(&self) {
         println!("{}", self.display());
     }
+
+    pub fn get_name(&self) -> &str {
+        match self {
+            Device::Thermometer(thermometer) => thermometer.get_name(),
+            Device::PowerSocket(power_socket) => power_socket.get_name(),
+        }
+    }
 }
 
 #[cfg(test)]