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rnaufal/AllPeopleCars.java

Created March 6, 2018 15:06
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AllPeopleCars.java
Collection<Car> allPeopleCars = people
.stream()
.map(Person::getCars)
.flatMap(mayHaveCars -> mayHaveCars.map(Collection::stream).orElse(Stream.empty()))
.collect(Collectors.toList());
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