}

    /**
     * Sets the prefix match weight.
     * @param prefixMatchWeight The prefix match weight.
     * @return This builder instance.
     */
    public SuggestRequestBuilder setPrefixMatchWeight(final float prefixMatchWeight) {
        request.setPrefixMatchWeight(prefixMatchWeight);
        return this;
    }

    /**
     * Sets whether to match the first word.

            fail("Expected exception for invalid Word document");
        } catch (final ExtractException e) {
            // ExtractException with improved message
            assertTrue("Error message should contain context about Word document or extraction",
                    e.getMessage().contains("Word") || e.getMessage().contains("extract"));
        } catch (final RuntimeException e) {

  try {
    close()
  } catch (e: AssertionError) {
    throw e
  } catch (rethrown: RuntimeException) {
    if (rethrown.message == "bio == null") {
      // Conscrypt in Android 10 and 11 may throw closing an SSLSocket. This is safe to ignore.
      // https://issuetracker.google.com/issues/177450597
      return
    }
    throw rethrown
  } catch (_: Exception) {
  }
}

```

因为上述数据未包含已存储的属性 `"tax": 20.2`，新的输入模型会把 `"tax": 10.5` 作为默认值。

因此，本次操作把 `tax` 的值「更新」为 `10.5`。

## 用 `PATCH` 进行部分更新

<a href="https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> 操作用于更新 *部分* 数据。

即，只发送要更新的数据，其余数据保持不变。

/// note | 笔记

`PATCH` 没有 `PUT` 知名，也怎么不常用。

很多人甚至只用 `PUT` 实现部分更新。

**FastAPI** 对此没有任何限制，可以**随意**互换使用这两种操作。

    CountDownLatch latch = new CountDownLatch(1);
    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();
          }
        };
    unused = null; // Hint to the JIT that unused is unreachable
    GcFinalization.await(latch);
    assertEquals(0, latch.getCount());
  }

                return peer.loadClass(name);
            } catch (final Exception e) {
                // drop through...
            } catch (final LinkageError e) {
                // drop through...
            }
        }

        try {
            // last chance - classic model
            return Class.forName(name);
        } catch (final Exception e) {
            throw new TypeNotPresentException(name, e);

## Actualizaciones parciales con `PATCH` { #partial-updates-with-patch }

También puedes usar la operación de <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> para actualizar *parcialmente* datos.

Esto significa que puedes enviar solo los datos que deseas actualizar, dejando el resto intacto.

/// note | Nota

`PATCH` es menos usado y conocido que `PUT`.

from unittest.mock import patch

from docs_src.python_types.tutorial008_py39 import process_items


def test_process_items():
    with patch("builtins.print") as mock_print:
        process_items({"a": 1.0, "b": 2.5})

    assert mock_print.call_count == 4
    call_args = [arg.args for arg in mock_print.call_args_list]
    assert call_args == [
        ("a",),
        (1.0,),
        ("b",),
        (2.5,),

                } catch (final IOException e) {
                    throw new IORuntimeException(e);
                }
                return true;
            }, OptionalThing.empty());
            response.flushBuffer();
            if (logger.isDebugEnabled()) {
                logger.debug("Loaded {} documents", count);
            }

        // Verify num_sids
        assertEquals(2, lsarSidArrayX.num_sids, "num_sids should match the array length");

        // Verify sids array and its contents
        assertNotNull(lsarSidArrayX.sids, "sids array should not be null");
        assertEquals(2, lsarSidArrayX.sids.length, "sids array length should match");
        assertEquals(sidT1, lsarSidArrayX.sids[0].sid, "First SID should be unwrapped correctly");