///

FastAPI 現在會：

- 驗證資料，確保長度最多 50 個字元
- 當資料不合法時，回給用戶端清楚的錯誤
- 在 OpenAPI 的路徑操作中文件化該參數（因此會出現在自動文件 UI）

## 替代方式（舊）：將 `Query` 作為預設值 { #alternative-old-query-as-the-default-value }

舊版 FastAPI（<dfn title="2023-03 之前">0.95.0</dfn> 以前）需要把 `Query` 當成參數的預設值，而不是放在 `Annotated` 裡。你很可能會在各處看到這種寫法，所以我也會說明一下。

/// tip | 提示

新程式碼且在可能的情況下，請依上面說明使用 `Annotated`。它有多項優點（如下所述），而沒有缺點。🍰

<div class="termy">

```console
$ cd ~/code/prisoner-of-azkaban

// You don't need to be in the old directory to deactivate, you can do it wherever you are, even after going to the other project 😎
$ deactivate

// Activate the virtual environment in prisoner-of-azkaban/.venv 🚀
$ source .venv/bin/activate

  - The `--experimental-encryption-provider-config` flag is deprecated in favor of `--encryption-provider-config`. The old flag is accepted with a warning but will be removed in 1.14. ([#71206](https://github.com/ku...

   * possible pair of these futures in {@link FuturesTest#runExtensiveMergerTest}.
   *
   * <p>Each test requires a new {@link TestFutureBatch} because we need new delayed futures each
   * time, as the old delayed futures were completed as part of the old test.
   */
  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests
  private static final class TestFutureBatch {

   * possible pair of these futures in {@link FuturesTest#runExtensiveMergerTest}.
   *
   * <p>Each test requires a new {@link TestFutureBatch} because we need new delayed futures each
   * time, as the old delayed futures were completed as part of the old test.
   */
  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests
  private static final class TestFutureBatch {

        }

        if (!hasBeenPackagedDuringThisSession(project)) {
            // fallback to loose class files only if artifacts haven't been packaged yet
            // and only for plain old jars. Not war files, not ear files, not anything else.
            return determineBuildOutputDirectoryForArtifact(project, artifact);
        }

        // The fall-through indicates that the artifact cannot be found;

			if time.Since(h.lastStarted).Seconds() > 30 {
				return
			}
		}
	}
}

// CreateOrAdjustGlobalBuffer will create or adjust the global log entry buffers
// which are used to migrate log entries between old and new targets.
func CreateOrAdjustGlobalBuffer(currentTgt *Target, newTgt *Target) {
	logChLock.Lock()
	defer logChLock.Unlock()

	}

	if createdByRel, ok := userSchema.Relationships.Relations["CreatedBy"]; ok {
		if createdByRel.FieldSchema != userSchema {
			t.Fatalf("expects same field schema, but got new %p, old %p", createdByRel.FieldSchema, userSchema)
		}
	} else {
		t.Fatalf("expects created by relations, but not found")
	}
}

func TestEmbeddedHas(t *testing.T) {
	type Toy struct {
		ID        int

   * CacheLoader#reload}
   * to obtain a future of the new value. If the returned future is already complete, it is returned
   * immediately. Otherwise, the old value is returned.
   *
   * <p><b>Note:</b> <i>all exceptions thrown during refresh will be logged and then swallowed</i>.
   *
   * @param duration the length of time after an entry is created that it should be considered

        }
    }

    /**
     * Deletes all crawling information records and their parameters that expired before the specified date.
     * This is a bulk cleanup operation for removing old session data.
     *
     * @param date the expiration time threshold - records expired before this time will be deleted
     */
    public void deleteBefore(final long date) {