bEncoding = encoding{encode: encodeB, validate: validateB, length: 4}
	uEncoding = encoding{encode: encodeU, validate: validateU, length: 4}
	jEncoding = encoding{encode: encodeJ, validate: validateJ, length: 4}

	// rawEncoding encodes a raw instruction byte sequence.
	rawEncoding = encoding{encode: encodeRawIns, validate: validateRaw, length: 4}

    /**
     * Writes the given byte array to the stream. Encodes the bytes and length information.
     */
    void writeBinary(byte[] bytes, int offset, int count) throws IOException;

    /**
     * Appends an encoded stream to this stream. Encodes the stream as a series of chunks with length information.
     */
    void encodeChunked(EncodeAction<Encoder> writeAction) throws Exception;

    /**

func (w *Encoder) Uint64(x uint64) {
	w.Sync(SyncUint64)
	w.rawUvarint(x)
}

// Len encodes and writes a non-negative int value into the element bitstream.
func (w *Encoder) Len(x int) { assert(x >= 0); w.Uint64(uint64(x)) }

// Int encodes and writes an int value into the element bitstream.
func (w *Encoder) Int(x int) { w.Int64(int64(x)) }

// Len encodes and writes a uint value into the element bitstream.

		return nil
	}
	info.encInit.Lock()
	defer info.encInit.Unlock()
	enc := info.encoder.Load()
	if enc == nil {
		if building == nil {
			building = make(map[*typeInfo]bool)
		}
		building[info] = true
		enc = compileEnc(ut, building)
		info.encoder.Store(enc)
	}
	return enc
}

func (enc *Encoder) encode(b *encBuffer, value reflect.Value, ut *userTypeInfo) {
	defer catchError(&enc.err)

See the License for the specific language governing permissions and
limitations under the License.
*/

package modes

import (
	"github.com/fxamacker/cbor/v2"
)

var Encode cbor.EncMode = func() cbor.EncMode {
	encode, err := cbor.EncOptions{
		// Map keys need to be sorted to have deterministic output, and this is the order
		// defined in RFC 8949 4.2.1 "Core Deterministic Encoding Requirements".

    Convert any object to something that can be encoded in JSON.

    This is used internally by FastAPI to make sure anything you return can be
    encoded as JSON before it is sent to the client.

    You can also use it yourself, for example to convert objects before saving them
    in a database that supports only JSON.

    Read more about it in the
    [FastAPI docs for JSON Compatible Encoder](https://fastapi.tiangolo.com/tutorial/encoder/).

// by calling [Encoder.SetEscapeHTML](false).
//
// Array and slice values encode as JSON arrays, except that
// []byte encodes as a base64-encoded string, and a nil slice
// encodes as the null JSON value.
//
// Struct values encode as JSON objects.
// Each exported struct field becomes a member of the object, using the
// field name as the object key, unless the field is omitted for one of the

	enc := new(Encoder)
	enc.w = []io.Writer{w}
	enc.sent = make(map[reflect.Type]typeId)
	enc.countState = enc.newEncoderState(new(encBuffer))
	return enc
}

// writer returns the innermost writer the encoder is using.
func (enc *Encoder) writer() io.Writer {
	return enc.w[len(enc.w)-1]
}

// pushWriter adds a writer to the encoder.
func (enc *Encoder) pushWriter(w io.Writer) {
	enc.w = append(enc.w, w)
}

	// Update" is required.
	tableSizeUpdate bool
	w               io.Writer
	buf             []byte
}

// NewEncoder returns a new Encoder which performs HPACK encoding. An
// encoded data is written to w.
func NewEncoder(w io.Writer) *Encoder {
	e := &Encoder{
		minSize:         uint32Max,
		maxSizeLimit:    initialHeaderTableSize,
		tableSizeUpdate: false,
		w:               w,
	}
	e.dynTab.table.init()

    ```Python hl_lines="4  21"
    {!> ../../../docs_src/encoder/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="5  22"
    {!> ../../../docs_src/encoder/tutorial001.py!}
    ```

In this example, it would convert the Pydantic model to a `dict`, and the `datetime` to a `str`.