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Brian Goetz brian.goetz at oracle.com
Thu Feb 7 11:53:30 PST 2013

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I pushed an update along the lines of what was discussed yesterday, so people can take a look. Summary:

Eliminated "Downstream" abstraction
Added FlatMapper type (with nested specializations) in j.u.s.
Added five forms of Stream.flatMap flatMap(Function<T, Stream) flatMap(FlatMapper<T,U>) flatMap(FlatMapper.To{Int,Long,Double})
Added one form of flatMap for each primitive stream: {Int,Long,Double}Stream.flatMap(FlatMapper.{ILD}To{ILD})

Check it out and see what you think. Commit message attached. I think this is an improvement.

Bikeshedding on naming can continue :)

-------- Original Message -------- Subject: hg: lambda/lambda/jdk: Replace explode() with two forms of flatMap: flatMap(T->Stream), and flatMap(FlatMapper<T, U>) Date: Thu, 07 Feb 2013 19:37:14 +0000 From: brian.goetz at oracle.com To: lambda-dev at openjdk.java.net

Changeset: 3aed6b4f4d42 Author: briangoetz Date: 2013-02-07 14:36 -0500 URL: http://hg.openjdk.java.net/lambda/lambda/jdk/rev/3aed6b4f4d42

Replace explode() with two forms of flatMap: flatMap(T->Stream), and flatMap(FlatMapper<T,U>)

! src/share/classes/java/util/stream/DoublePipeline.java ! src/share/classes/java/util/stream/DoubleStream.java

src/share/classes/java/util/stream/FlatMapper.java ! src/share/classes/java/util/stream/IntPipeline.java ! src/share/classes/java/util/stream/IntStream.java ! src/share/classes/java/util/stream/LongPipeline.java ! src/share/classes/java/util/stream/LongStream.java ! src/share/classes/java/util/stream/ReferencePipeline.java ! src/share/classes/java/util/stream/Stream.java ! test-ng/bootlib/java/util/stream/LambdaTestHelpers.java ! test-ng/boottests/java/util/stream/SpinedBufferTest.java ! test-ng/tests/org/openjdk/tests/java/util/stream/ExplodeOpTest.java ! test-ng/tests/org/openjdk/tests/java/util/stream/ToArrayOpTest.java ! test/java/util/LambdaUtilities.java ! test/java/util/stream/Stream/EmployeeStreamTest.java ! test/java/util/stream/Stream/IntStreamTest.java ! test/java/util/stream/Stream/IntegerStreamTest.java ! test/java/util/stream/Stream/StringBuilderStreamTest.java ! test/java/util/stream/Streams/BasicTest.java

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