+ "}");
  }

  public void testMeanOf() {
    assertThrows(IllegalArgumentException.class, Stats::meanOf);
    assertThrows(IllegalArgumentException.class, () -> Stats.meanOf(ImmutableList.<Number>of()));
    assertThat(Stats.meanOf(ONE_VALUE)).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(Stats.meanOf(POSITIVE_INFINITY)).isPositiveInfinity();
    assertThat(Stats.meanOf(NEGATIVE_INFINITY)).isNegativeInfinity();

/// tip | 提示

Pydantic 也有 [`BeforeValidator`](https://docs.pydantic.dev/latest/concepts/validators/#field-before-validator) 等等。🤓

///

例如，以下自訂驗證器會檢查項目 ID 是否以 `isbn-` 開頭（<abbr title="International Standard Book Number - 國際標準書號">ISBN</abbr> 書籍編號），或以 `imdb-` 開頭（<abbr title="Internet Movie Database - 互聯網電影資料庫: 含有電影資訊的網站">IMDB</abbr> 電影 URL 的 ID）：

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py hl[5,16:19,24] *}

labels.ldap_base_dn=DN base
labels.ldapAccountFilter=Filtro de cuenta
labels.ldapGroupFilter=Filtro de grupo
labels.ldapMemberofAttribute=Atributo memberOf
labels.ldap_account_filter=Filtro de cuenta
labels.ldap_group_filter=Filtro de grupo
labels.ldap_memberof_attribute=Atributo memberOf
labels.notification_login=Página de inicio de sesión
labels.notification_search_top=Página superior de búsqueda
labels.storage_endpoint=Punto final

labels.ldap_admin_security_credentials=비밀번호
labels.ldap_base_dn=베이스 DN
labels.ldapAccountFilter=계정 필터
labels.ldapGroupFilter=그룹 필터
labels.ldapMemberofAttribute=memberOf 속성
labels.ldap_account_filter=계정 필터
labels.ldap_group_filter=그룹 필터
labels.ldap_memberof_attribute=memberOf 속성
labels.notification_login=로그인 페이지
labels.notification_search_top=검색 상단 페이지
labels.storage_endpoint=엔드포인트
labels.storage_access_key=액세스 키

   * charset} parameter set to the {@link Charset#name name} of the given charset. Only one {@code
   * charset} parameter will be present on the new instance regardless of the number set on this
   * one.
   *
   * <p>If a charset must be specified that is not supported on this JVM (and thus is not
   * representable as a {@link Charset} instance), use {@link #withParameter}.
   */

### SIG-instrumentation

No feature work, but a large refactoring of metrics-server as well as a number of bug fixes.

### SIG-node

        if (scrollId != null) {
            client.prepareClearScroll().addScrollId(scrollId).execute(ActionListener.wrap(() -> {}));
        }
    }

    @Override
    protected Number doReadNextVal() {
        final String msg = "This table is NOT related to sequence: " + asEsIndexType();
        throw new UnsupportedOperationException(msg);
    }

    @Override

    assertEquals(SECONDS, ArbitraryInstances.get(TimeUnit.class));
    assertThat(ArbitraryInstances.get(Object.class)).isNotNull();
    assertEquals(0, ArbitraryInstances.get(Number.class));
    assertEquals(UTF_8, ArbitraryInstances.get(Charset.class));
    assertThat(ArbitraryInstances.get(UUID.class)).isNotNull();
  }

  public void testGet_collections() {

et vérifiable](https://stackoverflow.com/help/minimal-reproducible-example), que vous pouvez **copier‑coller** et exécuter localement pour voir la même erreur ou le même comportement qu'ils observent, ou pour mieux comprendre leur cas d'utilisation.

* Si vous vous sentez très généreux, vous pouvez essayer de **créer un tel exemple** vous‑même, simplement à partir de la description du problème. Gardez simplement à l'esprit que cela peut prendre beaucoup de temps et qu'il peut être préférable...

In many cases you might already know the answer for those questions. 🤓

If you are helping a lot of people with their questions, you will become an official [FastAPI Expert](fastapi-people.md#fastapi-experts). 🎉

Just remember, the most important point is: try to be kind. People come with their frustrations and in many cases don't ask in the best way, but try as best as you can to be kind. 🤗