Hi, http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8050820-Optional-stream/webrev/
This is one of those cases where i think adding a new method to Optional carries enough weight. It can be really awkward to use Optional with Stream.flatMap to map to a stream of present values. It's not at all obvious that one can do "op.map(Stream::of).orElse(Stream.empty()))" so often one sees some contorted code of there in the wild. Hopefully adding Optional.stream (and to the primitive variants) will help reduce such contortions. A CCC will be filed. Thanks, Paul.
