minor fix deref_and_derefmut

4 years ago · c67994c50d
parent 002d58311d
commit c67994c50d
1 changed files with 1 additions and 1 deletions
--- a/README.md
+++ b/README.md
@ -10366,8 +10366,8 @@ fn main() {
 This prints:

 ```text
-40
 None
+40
 ```

 We can also implement `DerefMut` so we can change the values through `*`. It looks almost the same. You need `Deref` before you can implement `DerefMut`.