„Streaming“ von Daten bedeutet, dass Ihre App damit beginnt, Datenelemente an den Client zu senden, ohne darauf zu warten, dass die gesamte Folge von Elementen fertig ist.

Sie sendet also das erste Element, der Client empfängt es und beginnt mit der Verarbeitung, und Sie erzeugen währenddessen möglicherweise bereits das nächste Element.

```mermaid
sequenceDiagram
    participant App
    participant Client

    App->>App: Produce Item 1

    return result;
  }

  /**
   * Returns a {@code TreeRangeSet} representing the union of the specified ranges.
   *
   * <p>This is the smallest {@code RangeSet} which encloses each of the specified ranges. An
   * element will be contained in this {@code RangeSet} if and only if it is contained in at least
   * one {@code Range} in {@code ranges}.
   *
   * @since 21.0
   */

    implements SetMultimap<K, V> {
  /**
   * Returns a {@link Collector} that accumulates elements into an {@code ImmutableSetMultimap}
   * whose keys and values are the result of applying the provided mapping functions to the input
   * elements.
   *
   * <p>For streams with defined encounter order (as defined in the Ordering section of the {@link

       *   rowEntry at least once.
       *
       * - The only case in which rowEntry is cleared (during remove() below) happens only if the
       *   caller removed every element from columnIterator. During that process, we would have had
       *   to iterate it to exhaustion. Then we can apply the logic above about an empty

///

### `yield from` { #yield-from }

Lorsque vous itérez sur quelque chose, comme un objet de type fichier, et que vous faites un `yield` pour chaque élément, vous pouvez aussi utiliser `yield from` pour émettre chaque élément directement et éviter la boucle `for`.

Ce n'est pas spécifique à FastAPI, c'est simplement Python, mais c'est une astuce utile à connaître. 😎

   * b}, then an {@code IndexOutOfBoundsException} is thrown. If {@code len} is zero, then no bytes
   * are read. Otherwise, the first byte read is stored into element {@code b[off]}, the next one
   * into {@code b[off+1]}, and so on. The number of bytes read is, at most, equal to {@code len}.
   *
   * @param in the input stream to read from

   *
   * <p>If the {@link File} passed to one of the {@link Traverser} methods does not exist or is not
   * a directory, no exception will be thrown and the returned {@link Iterable} will contain a
   * single element: that file.
   *
   * <p>Example: {@code Files.fileTraverser().depthFirstPreOrder(new File("/"))} may return files
   * with the following paths: {@code ["/", "/etc", "/etc/config.txt", "/etc/fonts", "/home",

	return lcp(strs, false)
}

func lcp(strs []string, pre bool) string {
	// short-circuit empty list
	if len(strs) == 0 {
		return ""
	}
	xfix := strs[0]
	// short-circuit single-element list
	if len(strs) == 1 {
		return xfix
	}
	// compare first to rest
	for _, str := range strs[1:] {
		xfixl := len(xfix)
		strl := len(str)
		// short-circuit empty strings

    delegateFuture = (ScheduledFuture<?>) delegateQueue.element();
    assertTrue(delegateFuture.isCancelled());

    delegateQueue.clear();

    future = service.scheduleAtFixedRate(() -> {}, 5, 5, MINUTES);
    future.cancel(true);
    assertTrue(future.isCancelled());
    delegateFuture = (ScheduledFuture<?>) delegateQueue.element();
    assertTrue(delegateFuture.isCancelled());

///

### `yield from` { #yield-from }

Wenn Sie über etwas iterieren, z. B. ein dateiähnliches Objekt, und dann für jedes Element `yield` verwenden, könnten Sie auch `yield from` verwenden, um jedes Element direkt weiterzugeben und die `for`-Schleife zu sparen.

Das ist nichts Spezifisches an FastAPI, das ist einfach Python, aber ein netter Trick. 😎