fix issues

2022-09-29 17:28:44 +08:00
parent bd2d0766ae
commit d8e797ae3a
3 changed files with 11 additions and 13 deletions
--- a/Lab4/Immutatorable.java
+++ b/Lab4/Immutatorable.java
@@ -9,5 +9,5 @@
 */

 interface Immutatorable<T> {
-  public <R> Immutatorable<R> transform(Immutator<R, T> immutator);
+  public <R> Immutatorable<R> transform(Immutator<? extends R, ? super T> immutator);
 }