Drozdov Igor Future part1 #39
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senia-psm
reviewed
Jul 26, 2017
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| // TODO get Optional<first name> from optPerson | ||
| final Optional<String> optFirstName = null; | ||
| final Optional<String> optFirstName = optPerson.flatMap(p -> Optional.of(p.getFirstName())); |
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| // TODO Get Stream<first name> from streamPerson | ||
| final Stream<String> streamFirstName = null; | ||
| final Stream<String> streamFirstName = streamPerson.flatMap(p -> Stream.of(person.getFirstName())); |
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| // TODO Get CompletableFuture<first name> from futurePerson | ||
| final CompletableFuture<String> futureFirstName = null; | ||
| final CompletableFuture<String> futureFirstName = futurePerson.thenCompose(p -> CompletableFuture.completedFuture(p.getFirstName())); |
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