참조자 빌림 해결

exercises/move_semantics/move_semantics4.rs

@@ -7,9 +7,8 @@
 // I AM NOT DONE
 
 fn main() {
-    let vec0 = Vec::new();
 
-    let mut vec1 = fill_vec(vec0);
+    let mut vec1 = fill_vec();
 
     println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
 
@@ -20,7 +19,7 @@ fn main() {
 
 // `fill_vec()` no longer takes `vec: Vec<i32>` as argument
 fn fill_vec() -> Vec<i32> {
-    let mut vec = vec;
+    let mut vec=Vec::new();
 
     vec.push(22);
     vec.push(44);

exercises/move_semantics/move_semantics5.rs

@@ -7,9 +7,12 @@
 
 fn main() {
     let mut x = 100;
-    let y = &mut x;
+    {
+        let y = &mut x;
+        y += 100;
+    }
     let z = &mut x;
-    *y += 100;
     *z += 1000;
+    println!("{}",x);
     assert_eq!(x, 1200);
 }