“Java Stream von Atribute unterschiedlich” Code-Antworten

Java Stream von Atribute unterschiedlich

public static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) {
    Set<Object> seen = ConcurrentHashMap.newKeySet();
    return t -> seen.add(keyExtractor.apply(t));
}

persons.stream().filter(distinctByKey(Person::getName))