initial commit

exercises/03_ticket_v1/10_references_in_memory/Cargo.toml

@@ -0,0 +1,4 @@
+[package]
+name = "references_in_memory"
+version = "0.1.0"
+edition = "2021"

exercises/03_ticket_v1/10_references_in_memory/src/lib.rs

@@ -0,0 +1,28 @@
+pub struct Ticket {
+    title: String,
+    description: String,
+    status: String,
+}
+
+// TODO: based on what you learned in this section, replace `todo!()` with
+//  the correct **stack size** for the respective type.
+#[cfg(test)]
+mod tests {
+    use super::Ticket;
+    use std::mem::size_of;
+
+    #[test]
+    fn u16_ref_size() {
+        assert_eq!(size_of::<&u16>(), todo!());
+    }
+
+    #[test]
+    fn u64_mut_ref_size() {
+        assert_eq!(size_of::<&mut u64>(), todo!());
+    }
+
+    #[test]
+    fn ticket_ref_size() {
+        assert_eq!(size_of::<&Ticket>(), todo!());
+    }
+}