* データ変換
* データの検証
* 自動文書化

## 特殊な型とバリデーション

`str`や`int`、`float`のような通常の単数型の他にも、`str`を継承したより複雑な単数型を使うこともできます。

すべてのオプションをみるには、<a href="https://docs.pydantic.dev/latest/concepts/types/" class="external-link" target="_blank">Pydanticのエキゾチック な型</a>のドキュメントを確認してください。次の章でいくつかの例をみることができます。

例えば、`Image`モデルのように`url`フィールドがある場合、`str`の代わりにPydanticの`HttpUrl`を指定することができます:

labels.search=搜索
labels.similar_doc_result_status=显示相似结果。
labels.search_result_status=<b>{0}</b> 的搜索结果<span class="br-phone"></span> <b>{1}</b> 条中的 <b>{2}</b> - <b>{3}</b> 条
labels.search_result_status_over=<b>{0}</b> 的搜索结果<span class="br-phone"></span> 大约 <b>{1}</b> 条以上 <b>{2}</b> - <b>{3}</b> 条
labels.search_result_time=({0} 秒)
labels.prev_page=上一页
labels.next_page=下一页

 *   <li><a href="http://www.ietf.org/rfc/rfc5988.txt">RFC 5988</a>
 * </ul>
 *
 * @author Kurt Alfred Kluever
 * @since 11.0
 */
@GwtCompatible
public final class HttpHeaders {
  private HttpHeaders() {}

  // HTTP Request and Response header fields

  /** The HTTP {@code Cache-Control} header field name. */
  public static final String CACHE_CONTROL = "Cache-Control";

'./methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Creates a new Popper.js instance.\n   * @class Popper\n   * @param {Element|referenceObject} reference - The reference element used to position the popper\n   * @param {Element} popper - The HTML / XML element used as the popper\n   * @param {Object} options -...

 * class's counterparts {@link Lists}, {@link Sets}, and {@link Maps}.
 *
 * @author Kurt Alfred Kluever
 * @since 11.0
 */
@GwtCompatible
public final class Queues {
  private Queues() {}

  // ArrayBlockingQueue

  /**
   * Creates an empty {@code ArrayBlockingQueue} with the given (fixed) capacity and nonfair access
   * policy.
   */
  @J2ktIncompatible

   * <p><b>Note:</b> this method does not return the number of <i>distinct keys</i> in the multimap,
   * which is given by {@code keySet().size()} or {@code asMap().size()}. See the opening section of
   * the {@link Multimap} class documentation for clarification.
   */
  int size();

  /**
   * Returns {@code true} if this multimap contains no key-value pairs. Equivalent to {@code size()
   * == 0}, but can in some cases be more efficient.

import org.opensearch.search.aggregations.metrics.TopHitsAggregationBuilder;
import org.opensearch.search.aggregations.metrics.ValueCountAggregationBuilder;

/**
 * @author ESFlute (using FreeGen)
 */
public abstract class BsRelatedContentCA extends EsAbstractConditionAggregation {

    // ===================================================================================

	return cleanMetadataKeys(metadata, "md5Sum", "etag", "expires", xhttp.AmzObjectTagging, "last-modified", VersionPurgeStatusKey)
}

// Filter X-Amz-Storage-Class field only if it is set to STANDARD.
// This is done since AWS S3 doesn't return STANDARD Storage class as response header.
func removeStandardStorageClass(metadata map[string]string) map[string]string {
	if metadata[xhttp.AmzStorageClass] == storageclass.STANDARD {

import org.codelibs.fess.opensearch.config.exentity.PathMapping;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;

public class ViewHelperTest extends UnitFessTestCase {
    public ViewHelper viewHelper;

    private UserAgentHelper userAgentHelper;

    private PathMappingHelper pathMappingHelper;

    private File propertiesFile;

{* ../../docs_src/query_params_str_validations/tutorial006.py hl[7] *}

/// info | 情報

これまで`...`を見たことがない方へ: これは特殊な単一値です。<a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">Pythonの一部であり、"Ellipsis"と呼ばれています</a>。

///

これは **FastAPI** にこのパラメータが必須であることを知らせます。

## クエリパラメータのリスト / 複数の値