1 files changed, 19 insertions, 0 deletions
diff --git a/rust/rustlings/solutions/06_move_semantics/move_semantics4.rs b/rust/rustlings/solutions/06_move_semantics/move_semantics4.rs
new file mode 100644
index 0000000..1a39d4f
--- /dev/null
+++ b/rust/rustlings/solutions/06_move_semantics/move_semantics4.rs
@@ -0,0 +1,19 @@
+fn main() {
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn move_semantics4() {
+        let mut x = Vec::new();
+        let y = &mut x;
+        // `y` used here.
+        y.push(42);
+        // The mutable reference `y` is not used anymore,
+        // therefore a new reference can be created.
+        let z = &mut x;
+        z.push(13);
+        assert_eq!(x, [42, 13]);
+    }
+}