*
   * @since 10.0
   */
  public static final int MAX_POWER_OF_TWO = 1 << (Integer.SIZE - 2);

  /**
   * Returns a hash code for {@code value}; obsolete alternative to {@link Integer#hashCode(int)}.
   *
   * @param value a primitive {@code int} value
   * @return a hash code for the value
   */
  @InlineMe(replacement = "Integer.hashCode(value)")
  @InlineMeValidationDisabled(

    inappropriate.

 *  New: `HttpUrl.get(String)` is an alternative to `HttpUrl.parse(String)` that throws an exception
    when the URL is malformed instead of returning null. Use this to avoid checking for null in
    situations where the input is known to be well-formed. We've also added `MediaType.get(String)`
    which is an exception-throwing alternative to `MediaType.parse(String)`.

///

FastAPI 现在会：

- 对数据进行**校验**，确保最大长度为 50 个字符
- 当数据无效时向客户端展示**清晰的错误**
- 在 OpenAPI 模式的*路径操作*中**记录**该参数（因此会出现在**自动文档 UI** 中）

## 另一种（旧的）方式：把 `Query` 作为默认值 { #alternative-old-query-as-the-default-value }

早期版本的 FastAPI（<dfn title="早于 2023-03">0.95.0</dfn> 之前）要求你把 `Query` 作为参数的默认值，而不是放在 `Annotated` 里。你很可能会在别处看到这种写法，所以我也给你解释一下。

/// tip | 提示

   *
   * <p>Prefer {@link Double#BYTES} instead.
   *
   * @since 10.0
   */
  public static final int BYTES = Double.BYTES;

  /**
   * Returns a hash code for {@code value}; obsolete alternative to {@link Double#hashCode(double)}.
   *
   * @param value a primitive {@code double} value
   * @return a hash code for the value
   */
  @InlineMe(replacement = "Double.hashCode(value)")

FastAPI は次を行います:

* 最大長が 50 文字であることを確かめるようデータを **検証** する
* データが有効でないときに、クライアントに **明確なエラー** を表示する
* OpenAPI スキーマの *path operation* にパラメータを **ドキュメント化** する（その結果、**自動ドキュメント UI** に表示されます）

## 代替（古い方法）: デフォルト値としての `Query` { #alternative-old-query-as-the-default-value }

FastAPI の以前のバージョン（<dfn title="2023-03 より前">0.95.0</dfn> より前）では、パラメータのデフォルト値として `Query` を使う必要があり、`Annotated` の中に入れるのではありませんでした。これを使ったコードを見かける可能性が高いので、説明します。

/// tip | 豆知識

자동으로 생성된 인터랙티브 API 문서([Swagger UI](https://github.com/swagger-api/swagger-ui) 제공)를 볼 수 있습니다:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-01-swagger-ui-simple.png)

## 대안 API 문서 { #alternative-api-docs }

또한 [http://192.168.99.100/redoc](http://192.168.99.100/redoc) 또는 [http://127.0.0.1/redoc](http://127.0.0.1/redoc)(또는 Docker 호스트를 사용해 동등하게 접근)로 이동할 수도 있습니다.

	// Second, if ContentErr==nil, the content should match Content.
	// If content is large, an alternative to setting Content is to set File,
	// which names a file in the testdata/ directory containing the
	// uncompressed expected content.
	// If content is very large, an alternative to setting Content or File
	// is to set Size, which will then be checked against the header-reported size

   *
   * @since 10.0
   */
  public static final long MAX_POWER_OF_TWO = 1L << (Long.SIZE - 2);

  /**
   * Returns a hash code for {@code value}; obsolete alternative to {@link Long#hashCode(long)}.
   *
   * @param value a primitive {@code long} value
   * @return a hash code for the value
   */
  @InlineMe(replacement = "Long.hashCode(value)")

///

## Les avantages d'une norme, documentation alternative { #standards-based-benefits-alternative-documentation }

Et comme le schéma généré suit la norme [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md), il existe de nombreux outils compatibles.

     * Dynamic Configuration (ConfigMap API in the core API group) enables application
configuration to be stored as a Kubernetes API object and pulled dynamically on
container startup, as an alternative to baking in command-line flags when a
container is built.
     * Turnkey Deployments (Deployment API (Beta) in the Extensions API group)
automate deployment and rolling updates of applications, specified