{% extends "base.html" %}

{% block announce %}
<div class="announce-wrapper">
  <div id="announce-left">
    <div class="item">
      <a class="announce-link" href="https://twitter.com/fastapi" target="_blank">
        <span class="twemoji twitter">
          {% include ".icons/fontawesome/brands/twitter.svg" %}
        </span> Follow <strong>@fastapi</strong> on <strong>Twitter</strong> to stay updated
      </a>
    </div>
    <div class="item">

* Schreiben Sie Nachrichten in den Tabs.
* Schließen Sie dann einen der Tabs.

Das wird die Ausnahme `WebSocketDisconnect` auslösen und alle anderen Clients erhalten eine Nachricht wie:

```
Client #1596980209979 left the chat
```

!!! tip "Tipp"
    Die obige Anwendung ist ein minimales und einfaches Beispiel, das zeigt, wie Nachrichten verarbeitet und an mehrere WebSocket-Verbindungen gesendet werden.

    builder.put("bb", 3);
    builder.put("d", 2);
    builder.put("a", 5);
    builder.orderKeysBy(
        new Ordering<String>() {
          @Override
          public int compare(String left, String right) {
            return left.length() - right.length();
          }
        });
    builder.put("cc", 4);
    builder.put("a", 2);
    builder.put("bb", 6);

			newKeys = append(newKeys, foundKey)
			newVals = append(newVals, foundVal)
		} else {
			found = true
		}
	}
	// If not found, just return.
	if !found {
		return false
	}
	// If none left...
	if len(newKeys) == 0 {
		*x = nil
		return true
	}

	// Reserialize...
	x.serialize(plSize, newKeys, newVals)
	return true
}

    builder.put("bb", 3);
    builder.put("d", 2);
    builder.put("a", 5);
    builder.orderKeysBy(
        new Ordering<String>() {
          @Override
          public int compare(String left, String right) {
            return left.length() - right.length();
          }
        });
    builder.put("cc", 4);
    builder.put("a", 2);
    builder.put("bb", 6);

    builder.put("bb", 3);
    builder.put("d", 2);
    builder.put("a", 5);
    builder.orderKeysBy(
        new Ordering<String>() {
          @Override
          public int compare(String left, String right) {
            return left.length() - right.length();
          }
        });
    builder.put("cc", 4);
    builder.put("a", 2);
    builder.put("bb", 6);

or be an untyped constant <a href="#Representability">representable</a> by a
value of type <code>uint</code>.
If the left operand of a non-constant shift expression is an untyped constant,
it is first implicitly converted to the type it would assume if the shift expression were
replaced by its left operand alone.
</p>

<pre>
var a [1024]byte
var s uint = 33

						dirStack = append(dirStack, meta.name+slashSeparator)
					}
				}
			case isSysErrNotDir(err):
				// skip
			}
		}

		// If directory entry left on stack, pop it now.
		for len(dirStack) > 0 {
			if opts.Limit > 0 && objsReturned >= opts.Limit {
				return nil
			}
			if contextCanceled(ctx) {
				return ctx.Err()
			}

        val binaryExpression = parentOfType<KtBinaryExpression>() ?: return null
        if (binaryExpression.operationToken !in KtTokens.ALL_ASSIGNMENTS) return null
        val leftOfBinary = deparenthesize(binaryExpression.left)
        if (leftOfBinary != lhs && !(leftOfBinary is KtDotQualifiedExpression && leftOfBinary.selectorExpression == lhs)) return null
        val firBinaryExpression = binaryExpression.getOrBuildFir(analysisSession.firResolveSession)

   *     errorMessageArgs[0]}, etc. Unmatched arguments will be appended to the formatted message in
   *     square braces. Unmatched placeholders will be left as-is.
   * @param errorMessageArgs the arguments to be substituted into the message template. Arguments
   *     are converted to strings using {@link String#valueOf(Object)}.