홍길동 / onos

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Sho SHIMIZU
Committed by Gerrit Code Review
6ac20982 1 parent cfa1c41f

Make the method receive a more flexible parameter 

Change-Id: Icf5d0e272a6f20be40a266f276710b1cd0c144ef
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Showing 1 changed file with 2 additions and 2 deletions
...@@ -659,8 +659,8 @@ public abstract class Tools { ...@@ -659,8 +659,8 @@ public abstract class Tools {
659 * @param <T> type of enclosed value 659 * @param <T> type of enclosed value
660 * @return optional as a stream 660 * @return optional as a stream
661 */ 661 */
662 - public static <T> Stream<T> stream(Optional<T> optional) { 662 + public static <T> Stream<T> stream(Optional<? extends T> optional) {
663 - return optional.map(Stream::of).orElse(Stream.empty()); 663 + return optional.map(x -> Stream.of(x)).orElse(Stream.empty());
664 } 664 }
665 665
666 // Auxiliary path visitor for recursive directory structure copying. 666 // Auxiliary path visitor for recursive directory structure copying.
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