*
   * <p><b>Comparison to {@code java.util.Optional}:</b> this class leaves the specific choice of
   * hash code unspecified, unlike the Java 8+ equivalent.
   */
  @Override
  public abstract int hashCode();

  /**
   * Returns a string representation for this instance.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this class leaves the specific string

		frame = ws.MaskFrameInPlace(frame)
	} else {
		frame = ws.NewFrame(op, fin, p)
	}

	return ww.writeFrame(w, frame)
}

// writeFrame writes frame binary representation into w.
func (ww *wsWriter) writeFrame(w io.Writer, f ws.Frame) error {
	const (
		bit0  = 0x80
		len7  = int64(125)
		len16 = int64(^(uint16(0)))
		len64 = int64(^(uint64(0)) >> 1)
	)

要使 `await` 工作，它必须位于支持这种异步机制的函数内。因此，只需使用 `async def` 声明它：

```Python hl_lines="1"
async def get_burgers(number: int):
    # Do some asynchronous stuff to create the burgers
    return burgers
```

...而不是 `def`:

```Python hl_lines="2"
# This is not asynchronous
def get_sequential_burgers(number: int):
    # Do some sequential stuff to create the burgers
    return burgers
```

	"github.com/minio/minio/internal/hash"
	"github.com/minio/pkg/v3/policy"
)

// APIError structure
type APIError struct {
	Code           string
	Description    string
	HTTPStatusCode int
	ObjectSize     string
	RangeRequested string
}

// APIErrorResponse - error response format
type APIErrorResponse struct {
	XMLName          xml.Name `xml:"Error" json:"-"`
	Code             string

				"application/vnd.informix-visionary",
				"application/vnd.intercon.formnet",
				"application/vnd.intertrust.digibox",
				"application/vnd.intertrust.nncp",
				"application/vnd.intu.qbo",
				"application/vnd.intu.qfx",
				"application/vnd.iptc.g2.conceptitem+xml",
				"application/vnd.iptc.g2.knowledgeitem+xml",
				"application/vnd.iptc.g2.newsitem+xml",
				"application/vnd.iptc.g2.packageitem+xml",

FastAPI позволяет использовать **аннотации типов** таким же способом, как и для ввода данных в  **параметры** функции, вы можете использовать модели Pydantic, списки, словари, скалярные типы (такие, как int, bool и т.д.).

//// tab | Python 3.10+

```Python hl_lines="16  21"
{!> ../../docs_src/response_model/tutorial001_01_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="18  23"

              override fun contentLength(): Long = postBytes.size.toLong()

              override fun writeTo(sink: BufferedSink) {
                sink.write(postBytes) // push bytes into the stream's buffer
                sink.flush() // Http2Connection.writeData subject to write window
                sink.close() // Http2Connection.writeData empty frame
              }
            },
        ),

			t.Errorf("Unexpected result on pluck name, got %+v", names)
		}
	}

	for idx, id := range ids {
		if int(id) != int(users[idx].ID) {
			t.Errorf("Unexpected result on pluck id, got %+v", ids)
		}
	}

	for idx, id := range ids2 {
		if int(id) != int(users[idx].ID+1) {
			t.Errorf("Unexpected result on pluck id, got %+v", ids)
		}
	}

	var times []time.Time

	srvCfg := newServerConfig()

	// hold the mutex lock before a new config is assigned.
	globalServerConfigMu.Lock()
	globalServerConfig = srvCfg
	globalServerConfigMu.Unlock()

	// Save config into file.
	return saveServerConfig(GlobalContext, objAPI, srvCfg)
}

func getValidConfig(objAPI ObjectLayer) (config.Config, error) {
	return readServerConfig(GlobalContext, objAPI, nil)
}

}

// isHTTPHeaderSizeTooLarge returns true if the provided
// header is larger than 8 KB or the user-defined metadata
// is larger than 2 KB.
func isHTTPHeaderSizeTooLarge(header http.Header) bool {
	var size, usersize int
	for key := range header {
		length := len(key) + len(header.Get(key))
		size += length
		for _, prefix := range userMetadataKeyPrefixes {
			if stringsHasPrefixFold(key, prefix) {
				usersize += length
				break