(yegor256#1573) Added wildcards to Threads ctor.

rocket-3 · Sep 12, 2021 · cc7503a · cc7503a
1 parent 445cf16
commit cc7503a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/main/java/org/cactoos/experimental/Threads.java b/src/main/java/org/cactoos/experimental/Threads.java
@@ -188,7 +188,7 @@ public Threads(
      * @param tasks The tasks to be executed concurrently.
      */
     private Threads(
-        final Func<Iterable<Callable<T>>, Iterable<Future<T>>> fnc,
+        final Func<? super Iterable<Callable<T>>, ? extends Iterable<? extends Future<T>>> fnc,
         final Iterable<? extends Scalar<? extends T>> tasks
     ) {
         super(