## より詳しい情報

<abbr title="Cross-Origin Resource Sharing (オリジン間リソース共有)">CORS</abbr>についてより詳しい情報は、<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">Mozilla CORS documentation</a> を参照して下さい。

/// note | 技術詳細

`from starlette.middleware.cors import CORSMiddleware` も使用できます。

**FastAPI** は、開発者の利便性を高めるために、`fastapi.middleware` でいくつかのミドルウェアを提供します。利用可能なミドルウェアのほとんどは、Starletteから直接提供されています。

   <span style="background-color:#007166"><font color="#D3D7CF"> server </font></span>  Documentation at <font color="#729FCF"><u style="text-decoration-style:solid">http://127.0.0.1:8000/docs</u></font>

  public abstract UnmodifiableIterator<E> iterator();

  /**
   * {@inheritDoc}
   *
   * <p>This method returns a serializable {@code ImmutableSortedSet}.
   *
   * <p>The {@link SortedSet#headSet} documentation states that a subset of a subset throws an
   * {@link IllegalArgumentException} if passed a {@code toElement} greater than an earlier {@code

    - [Action Required](#action-required-1)
    - [Other notable changes](#other-notable-changes-10)

<!-- END MUNGE: GENERATED_TOC -->

# v1.15.12

[Documentation](https://docs.k8s.io)

## Downloads for v1.15.12

filename | sha512 hash
-------- | -----------

* 📝 Fix Twitter to be X (Twitter) everywhere in documentation. PR [#13809](https://github.com/fastapi/fastapi/pull/13809) by [@valentinDruzhinin](https://github.com/valentinDruzhinin).
* 🐛 Prevent scroll-to-top on restart/fast buttons in `termynal.js`. PR [#13714](https://github.com/fastapi/fastapi/pull/13714) by [@Ashish-Pandey62](https://github.com/Ashish-Pandey62).

   * }
   *
   * <p>When selecting an executor, note that {@code directExecutor} is dangerous in some cases. See
   * the discussion in the {@link ListenableFuture#addListener} documentation. All its warnings
   * about heavyweight listeners are also applicable to heavyweight functions passed to this method.
   *
   * <p>After calling this method, you may not call {@link #finishToFuture()}, {@link

* The translation seems to have a similar structure as the original English file.
* The translation doesn't seem to change the original content, for example with obvious additional documentation sections.
* The translation doesn't use different Markdown structures, for example adding HTML tags when the original didn't have them.

   *
   * <p><b>Warning to users of Java 8+:</b> do not call any of the new <i>default methods</i> that
   * have been newly added to {@link ConcurrentMap}! These are marked with "Since: 1.8" in the
   * {@code ConcurrentMap} documentation. They will not function correctly and it is impossible for
   * Guava to fix them until Guava is ready to <i>require</i> Java 8 for all users.
   */
  ConcurrentMap<K, V> asMap();

  /**

- [MS-SMB2]: Server Message Block (SMB) Protocol Version 2 and 3
- [MS-SWN]: Service Witness Protocol
- [MS-SMBD]: SMB2 Remote Direct Memory Access (RDMA) Transport Protocol
- Windows Protocol Test Suites

   *
   * @since 19.0
   */
  public static final MediaType DART_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "dart");

  /**
   * <a
   * href="https://developer.apple.com/library/archive/documentation/UserExperience/Conceptual/PassKit_PG/DistributingPasses.html">Apple
   * Passbook</a>.
   *
   * @since 19.0
   */
  public static final MediaType APPLE_PASSBOOK =