laglangyue commented on code in PR #902:
URL: https://github.com/apache/incubator-pekko/pull/902#discussion_r1441298096
##########
stream/src/main/scala/org/apache/pekko/stream/scaladsl/Flow.scala:
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@@ -1007,8 +1007,7 @@ trait FlowOps[+Out, +Mat] {
*
* '''Cancels when''' downstream cancels
*/
- @nowarn("msg=deprecated")
- def mapConcat[T](f: Out => IterableOnce[T]): Repr[T] = statefulMapConcat(()
=> f)
+ def mapConcat[T](f: Out => IterableOnce[T]): Repr[T] = via(new MapConcat(f))
Review Comment:
Maybe not the correct opinion :
(1) Does javadsl require similar modifications? maybe refer to
`org.apache.pekko.stream.javadsl.Flow#statefulMapConcat`
(2) can we use object or case object for `MapConcat`, it is refered to
`org.apache.pekko.stream.impl.fusing.MapAsync`.
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