## Épingler votre version de `fastapi` { #pin-your-fastapi-version }

La première chose que vous devez faire est « épingler » la version de **FastAPI** que vous utilisez à la dernière version spécifique dont vous savez qu’elle fonctionne correctement pour votre application.

### Sans type de retour { #no-return-type }

Vous pouvez également omettre le type de retour. FastAPI utilisera alors [`jsonable_encoder`](./encoder.md) pour convertir les données en quelque chose qui peut être sérialisé en JSON, puis les enverra en JSON Lines.

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[33:36] hl[34] *}

## Événements envoyés par le serveur (SSE) { #server-sent-events-sse }

 *
 *  * **[Request Count:][requestCount]** the number of HTTP requests issued since this cache was
 *    created.
 *  * **[Network Count:][networkCount]** the number of those requests that required network use.
 *  * **[Hit Count:][hitCount]** the number of those requests whose responses were served by the
 *    cache.
 *
 * Sometimes a request will result in a conditional cache hit. If the cache contains a stale copy of

                                </h3>
                                <div class="card-tools">
                                    <div class="btn-group">
                                        <c:choose>
                                            <c:when test="${crudMode == null}">
                                                <la:link href="createnew" styleClass="btn btn-success btn-xs">

import java.nio.charset.Charset;

import org.jline.terminal.Terminal;

/**
 * Console icons for Maven upgrade tool output.
 * Each icon has a Unicode character and an ASCII fallback.
 * The appropriate representation is chosen based on the terminal's charset capabilities.
 */
public enum ConsoleIcon {
    /**
     * Success/completion icon.
     */
    SUCCESS('✓', "[OK]"),

    /**
     * Error/failure icon.
     */

            : ImmutableSet.copyOf(ImmutableList.sortedCopyOf(columnComparator, columnSpaceBuilder));

    return forOrderedComponents(cellList, rowSpace, columnSpace);
  }

  /** A factory that chooses the most space-efficient representation of the table. */
  static <R, C, V> RegularImmutableTable<R, C, V> forOrderedComponents(
      ImmutableList<Cell<R, C, V>> cellList,
      ImmutableSet<R> rowSpace,

  // it will be compatible with it: the name will be updated by device placement
  // logic to refer to the specific device chosen.
  //
  // Example: If one calls `op->SetDeviceName("/device:GPU")`, the value
  // returned by DeviceName should be "/device:GPU:*" until a particular GPU is
  // chosen for the operation by the device placement logic in the
  // executor. After that, the value returned by DeviceName will be a full

                                                </h4>
                                                <button type="button" class="close" data-dismiss="modal"
                                                        aria-label="Close">
                                                    <span aria-hidden="true">×</span>
                                                </button>

   *
   * <p>Note: This default implementation is overkill (but valid) for an unordered container. An
   * equally valid implementation for an unordered container is to throw an exception. The chosen
   * implementation, however, has the advantage of working for insertion-ordered containers, as
   * well.
   */
  @Override
  public List<Integer> order(List<Integer> insertionOrder) {
    return insertionOrder;
  }

   * 12.4.2</a>.
   *
   * <p>WARNING: Normally it's a smell if a class needs to be explicitly initialized, because static
   * state hurts system maintainability and testability. In cases when you have no choice while
   * interoperating with a legacy framework, this method helps to keep the code less ugly.
   *
   * @throws ExceptionInInitializerError if an exception is thrown during initialization of a class
   */