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> I don't see how JOIN is like flatMap This is explained in the blog post I linked, including an example.
by taffer 6y ago
> I don't see how JOIN is like flatMap
This is explained in the blog post I linked, including an example.
- karmakaze 6y agoIt's really flatMap/map from the link: List<Integer> s1 = Stream.of(1, 2); Supplier<Stream<String>> s2 = ()->Stream.of("A", "B"); s1.flatMap(v1 -> s2.get() .map(v2 -> tuple(v1, v2))) .forEach(System.out::println); That's just a nested loop.