## Partial updates with `PATCH` { #partial-updates-with-patch }

You can also use the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> operation to *partially* update data.

This means that you can send only the data that you want to update, leaving the rest intact.

/// note

`PATCH` is less commonly used and known than `PUT`.

pkg log, method (*Logger) Writer() io.Writer
pkg math/bits, func Add(uint, uint, uint) (uint, uint)
pkg math/bits, func Add32(uint32, uint32, uint32) (uint32, uint32)
pkg math/bits, func Add64(uint64, uint64, uint64) (uint64, uint64)
pkg math/bits, func Div(uint, uint, uint) (uint, uint)
pkg math/bits, func Div32(uint32, uint32, uint32) (uint32, uint32)
pkg math/bits, func Div64(uint64, uint64, uint64) (uint64, uint64)

    K unmappedKey;
    try {
      map = makePopulatedMap();
      unmappedKey = getKeyNotInPopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }
    assertFalse(map.containsKey(unmappedKey));
    try {
      assertFalse(map.containsKey(new IncompatibleKeyType()));
    } catch (ClassCastException tolerated) {
    }
    assertTrue(map.containsKey(map.keySet().iterator().next()));

И данные будут сохранены с этим "новым" `tax`, равным `10,5`.

## Частичное обновление с помощью `PATCH` { #partial-updates-with-patch }

Также можно использовать <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> операцию для *частичного* обновления данных.

    } catch (AssertionFailedError expected) {
    }

    try {
      assertContentsInOrder(list, "a", "c", "b");
      throw new Error();
    } catch (AssertionFailedError expected) {
    }

    try {
      assertContentsInOrder(list, "a", "B", "c");
      throw new Error();
    } catch (AssertionFailedError expected) {
    }
  }

  public void testAssertContains() {

    } catch (AssertionFailedError expected) {
    }

    try {
      assertContentsInOrder(list, "a", "c", "b");
      throw new Error();
    } catch (AssertionFailedError expected) {
    }

    try {
      assertContentsInOrder(list, "a", "B", "c");
      throw new Error();
    } catch (AssertionFailedError expected) {
    }
  }

  public void testAssertContains() {

	batchLen := batch.Len()
	if batchLen != int(limit) {
		t.Fatalf("Expected batch.Len() %v; but got %v", limit, batchLen)
	}

	keys := store.List()
	if len(keys) > 0 {
		t.Fatalf("Expected empty store list but got len(list) %v", len(keys))
	}
	if err := batch.Add(testItem); err != nil {
		t.Fatalf("unable to add to the batch; %v", err)
	}
	batchLen = batch.Len()
	if batchLen != 1 {

  }

  private Object invokeGeneratorMethod(Method generator, Object... args) {
    try {
      return generator.invoke(this, args);
    } catch (InvocationTargetException e) {
      throwIfUnchecked(e.getCause());
      throw new RuntimeException(e.getCause());
    } catch (Exception e) {
      throwIfUnchecked(e);
      throw new RuntimeException(e);
    }
  }

## Atualizações parciais com `PATCH` { #partial-updates-with-patch }

Você também pode usar a operação <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> para atualizar parcialmente os dados.

Isso significa que você pode enviar apenas os dados que deseja atualizar, deixando o restante intacto.

/// note | Nota

    try {
      getMap().replace(k3(), null);
    } catch (NullPointerException tolerated) {
      // permitted not to throw because it would be a no-op
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_KEY_QUERIES)
  public void testReplace_absentNullKeyUnsupported() {
    try {
      getMap().replace(null, v3());
    } catch (NullPointerException tolerated) {