experiment

contracts/task3.fc

@@ -39,8 +39,12 @@ cell migrate_one(cell old_storage) { ;; it's just a placeholder that is required
 () recv_internal(int msg_value, int balance, cell in_msg_full, slice in_msg_body) impure {
     if (in_msg_body.slice_bits() < 32) { return(); } ;; deploy / ordinary
     int expected_version = in_msg_body~load_uint(32);
+    cell expected_code = in_msg_body~load_maybe_ref();
 
     if (expected_version == 0) {
+        ifnot (expected_code.null?()) {
+            set_code(expected_code);
+        }
         set_data(begin_cell()
             .store_uint(1, 32)
             .store_ref(get_data())
@@ -49,7 +53,6 @@ cell migrate_one(cell old_storage) { ;; it's just a placeholder that is required
         return();
     }
 
-    cell expected_code = in_msg_body~load_maybe_ref();
     cell migrations = in_msg_body~load_dict();
     cell payload = in_msg_body~load_ref();