How to use

forEachEntry

method

in

com.google.common.collect.Multiset

/** A specialization of {@code addAllImpl} for when {@code elements} is itself a Multiset. */
private static <E> boolean addAllImpl(Multiset<E> self, Multiset<? extends E> elements) {
 if (elements.isEmpty()) {
  return false;
 }
 elements.forEachEntry(self::add);
 return true;
}

/** A specialization of {@code addAllImpl} for when {@code elements} is itself a Multiset. */
private static <E> boolean addAllImpl(Multiset<E> self, Multiset<? extends E> elements) {
 if (elements.isEmpty()) {
  return false;
 }
 elements.forEachEntry(self::add);
 return true;
}

public void testForEachEntry() {
 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet());
 List<Entry<E>> actual = new ArrayList<>();
 getMultiset()
   .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
 Helpers.assertEqualIgnoringOrder(expected, actual);
}

/**
 * Adds each element of {@code elements} to the {@code ImmutableMultiset}.
 *
 * @param elements the {@code Iterable} to add to the {@code ImmutableMultiset}
 * @return this {@code Builder} object
 * @throws NullPointerException if {@code elements} is null or contains a null element
 */
@CanIgnoreReturnValue
@Override
public Builder<E> addAll(Iterable<? extends E> elements) {
 if (elements instanceof Multiset) {
  Multiset<? extends E> multiset = Multisets.cast(elements);
  multiset.forEachEntry((e, n) -> contents.add(checkNotNull(e), n));
 } else {
  super.addAll(elements);
 }
 return this;
}

@CollectionFeature.Require(KNOWN_ORDER)
public void testForEachEntryOrdered() {
 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet());
 List<Entry<E>> actual = new ArrayList<>();
 getMultiset()
   .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
 assertEquals(expected, actual);
}

public void testForEachEntryDuplicates() {
 initThreeCopies();
 List<Entry<E>> expected = Collections.singletonList(Multisets.immutableEntry(e0(), 3));
 List<Entry<E>> actual = new ArrayList<>();
 getMultiset()
   .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
 assertEquals(expected, actual);
}

/**
 * Adds each element of {@code elements} to the {@code ImmutableMultiset}.
 *
 * @param elements the {@code Iterable} to add to the {@code ImmutableMultiset}
 * @return this {@code Builder} object
 * @throws NullPointerException if {@code elements} is null or contains a null element
 */
@CanIgnoreReturnValue
@Override
public Builder<E> addAll(Iterable<? extends E> elements) {
 if (elements instanceof Multiset) {
  Multiset<? extends E> multiset = Multisets.cast(elements);
  multiset.forEachEntry((e, n) -> contents.add(checkNotNull(e), n));
 } else {
  super.addAll(elements);
 }
 return this;
}

/** A specialization of {@code addAllImpl} for when {@code elements} is itself a Multiset. */
private static <E> boolean addAllImpl(Multiset<E> self, Multiset<? extends E> elements) {
 if (elements.isEmpty()) {
  return false;
 }
 elements.forEachEntry(self::add);
 return true;
}

/** A specialization of {@code addAllImpl} for when {@code elements} is itself a Multiset. */
private static <E> boolean addAllImpl(Multiset<E> self, Multiset<? extends E> elements) {
 if (elements.isEmpty()) {
  return false;
 }
 elements.forEachEntry(self::add);
 return true;
}

public void testForEachEntry() {
 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet());
 List<Entry<E>> actual = new ArrayList<>();
 getMultiset()
   .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
 Helpers.assertEqualIgnoringOrder(expected, actual);
}

/**
 * Adds each element of {@code elements} to the {@code ImmutableMultiset}.
 *
 * @param elements the {@code Iterable} to add to the {@code ImmutableMultiset}
 * @return this {@code Builder} object
 * @throws NullPointerException if {@code elements} is null or contains a null element
 */
@CanIgnoreReturnValue
@Override
public Builder<E> addAll(Iterable<? extends E> elements) {
 if (elements instanceof Multiset) {
  Multiset<? extends E> multiset = Multisets.cast(elements);
  multiset.forEachEntry((e, n) -> contents.add(checkNotNull(e), n));
 } else {
  super.addAll(elements);
 }
 return this;
}

/**
 * Adds each element of {@code elements} to the {@code ImmutableMultiset}.
 *
 * @param elements the {@code Iterable} to add to the {@code ImmutableMultiset}
 * @return this {@code Builder} object
 * @throws NullPointerException if {@code elements} is null or contains a null element
 */
@CanIgnoreReturnValue
@Override
public Builder<E> addAll(Iterable<? extends E> elements) {
 if (elements instanceof Multiset) {
  Multiset<? extends E> multiset = Multisets.cast(elements);
  multiset.forEachEntry((e, n) -> contents.add(checkNotNull(e), n));
 } else {
  super.addAll(elements);
 }
 return this;
}

@CollectionFeature.Require(KNOWN_ORDER)
public void testForEachEntryOrdered() {
 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet());
 List<Entry<E>> actual = new ArrayList<>();
 getMultiset()
   .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
 assertEquals(expected, actual);
}

public void testForEachEntryDuplicates() {
 initThreeCopies();
 List<Entry<E>> expected = Collections.singletonList(Multisets.immutableEntry(e0(), 3));
 List<Entry<E>> actual = new ArrayList<>();
 getMultiset()
   .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
 assertEquals(expected, actual);
}