///

## 使用 FastAPI 流式传输 JSON Lines { #stream-json-lines-with-fastapi }

要在 FastAPI 中流式传输 JSON Lines，可以在路径操作函数中不用 `return`，而是用 `yield` 逐个产生每个数据项。

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[1:24] hl[24] *}

如果你要返回的每个 JSON 项是类型 `Item`（一个 Pydantic 模型），并且这是一个异步函数，你可以将返回类型声明为 `AsyncIterable[Item]`：

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[1:24] hl[9:11,22] *}

		Key:   Enable,
		Value: "off",
	},
	config.KV{
		Key:   Frequency,
		Value: "24h",
	},
}

// callhomeCycleDefault is the default interval between two callhome cycles (24hrs)
const callhomeCycleDefault = 24 * time.Hour

// Config represents the subnet related configuration
type Config struct {
	// Flag indicating whether callhome is enabled.
	Enable bool `json:"enable"`

	// The interval between callhome cycles

        }
        setTarget(target);
        for (int i = 24; i < 32; i++) {
            if (material[i] != 0) {
                final byte[] challenge = new byte[8];
                System.arraycopy(material, 24, challenge, 0, 8);
                setChallenge(challenge);
                break;
            }
        }

        buf[i++] = (byte) (oidLen & 0xFF);
        // MECH_OID
        System.arraycopy(oidDer, 0, buf, i, oidLen);
        i += oidLen;
        // NAME_LEN (4 bytes big-endian)
        buf[i++] = (byte) ((nameLen >>> 24) & 0xFF);
        buf[i++] = (byte) ((nameLen >>> 16) & 0xFF);
        buf[i++] = (byte) ((nameLen >>> 8) & 0xFF);
        buf[i++] = (byte) (nameLen & 0xFF);
        // NAME

shuffle using tables. k := 4 var t0, t1, t2, t3 uint32 for r := 0; r < c.rounds-1; r++ { t0 = xk[k+0] ^ te0[uint8(s0>>24)] ^ te1[uint8(s1>>16)] ^ te2[uint8(s2>>8)] ^ te3[uint8(s3)] t1 = xk[k+1] ^ te0[uint8(s1>>24)] ^ te1[uint8(s2>>16)] ^ te2[uint8(s3>>8)] ^ te3[uint8(s0)] t2 = xk[k+2] ^ te0[uint8(s2>>24)] ^ te1[uint8(s3>>16)] ^ te2[uint8(s0>>8)] ^ te3[uint8(s1)] t3 = xk[k+3] ^ te0[uint8(s3>>24)] ^ te1[uint8(s0>>16)] ^ te2[uint8(s1>>8)] ^ te3[uint8(s2)] k += 4 s0, s1, s2, s3 = t0, t1, t2, t3 } // Last round...

///

## 使用 FastAPI 串流 JSON Lines { #stream-json-lines-with-fastapi }

要用 FastAPI 串流 JSON Lines，你可以在你的*路徑操作函式*中改用 `yield` 逐一產生項目，而不是用 `return`。

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[1:24] hl[24] *}

如果你要回傳的每個 JSON 項目型別都是 `Item`（一個 Pydantic 模型），而且該函式是 async，你可以將回傳型別宣告為 `AsyncIterable[Item]`：

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[1:24] hl[9:11,22] *}

     */
    public MsrpcLsarOpenPolicy2(final String server, final int access, final LsaPolicyHandle policyHandle) {
        super(server, new lsarpc.LsarObjectAttributes(), access, policyHandle);
        object_attributes.length = 24;
        final lsarpc.LsarQosInfo qos = new lsarpc.LsarQosInfo();
        qos.length = 12;
        qos.impersonation_level = 2;
        qos.context_mode = 1;
        qos.effective_only = 0;

        this.oid = ASN1ObjectIdentifier.getInstance(bo);

        // NAME_LEN
        if (buf.length < i + NAME_LEN_SIZE) {
            throw new IllegalArgumentException();
        }
        len = 0xff000000 & buf[i++] << 24;
        len |= 0x00ff0000 & buf[i++] << 16;
        len |= 0x0000ff00 & buf[i++] << 8;
        len |= 0x000000ff & buf[i++];

        // NAME
        if (buf.length < i + len) {

			minor |= uint32((dev & 0x00000ffffff00000) >> 12)
			h.Devmajor, h.Devminor = int64(major), int64(minor)
		case "darwin", "ios":
			// Copied from golang.org/x/sys/unix/dev_darwin.go.
			major := uint32((dev >> 24) & 0xff)
			minor := uint32(dev & 0xffffff)
			h.Devmajor, h.Devminor = int64(major), int64(minor)
		case "dragonfly":
			// Copied from golang.org/x/sys/unix/dev_dragonfly.go.
			major := uint32((dev >> 8) & 0xff)

    assertThat(formEncode(20)).isEqualTo("%14")
    assertThat(formEncode(21)).isEqualTo("%15")
    assertThat(formEncode(22)).isEqualTo("%16")
    assertThat(formEncode(23)).isEqualTo("%17")
    assertThat(formEncode(24)).isEqualTo("%18")
    assertThat(formEncode(25)).isEqualTo("%19")
    assertThat(formEncode(26)).isEqualTo("%1A")
    assertThat(formEncode(27)).isEqualTo("%1B")
    assertThat(formEncode(28)).isEqualTo("%1C")