```

この場合、関数パラメータ `q` はオプショナルとなり、デフォルトでは `None` になります。

/// check | "確認"

パスパラメータ `item_id` はパスパラメータであり、`q` はそれとは違ってクエリパラメータであると判別できるほど**FastAPI** が賢いということにも注意してください。

///

## クエリパラメータの型変換

`bool` 型も宣言できます。これは以下の様に変換されます:

```Python hl_lines="9"
{!../../docs_src/query_params/tutorial003.py!}
```

この場合、以下にアクセスすると:

```
http://127.0.0.1:8000/items/foo?short=1
```

もしくは、

```

  TFE_CallDLManagedTensorDeleter(dlmt_vptr);
}

// Checks whether the stride array matches the layout of compact, row-majored
// data.
bool IsValidStrideCompactRowMajorData(int64_t* shape_arr, int64_t* stride_arr,
                                      int ndim) {
  bool valid = true;
  int64_t expected_stride = 1;
  for (int i = ndim - 1; i >= 0; --i) {
    // Empty tensors are always compact regardless of strides.

func (DummyDialector) BindVarTo(writer clause.Writer, stmt *gorm.Statement, v interface{}) {
	writer.WriteByte('?')
}

func (DummyDialector) QuoteTo(writer clause.Writer, str string) {
	var (
		underQuoted, selfQuoted bool
		continuousBacktick      int8
		shiftDelimiter          int8
	)

	for _, v := range []byte(str) {
		switch v {
		case '`':
			continuousBacktick++
			if continuousBacktick == 2 {

# Zusätzliche Datentypen

Bisher haben Sie gängige Datentypen verwendet, wie zum Beispiel:

* `int`
* `float`
* `str`
* `bool`

Sie können aber auch komplexere Datentypen verwenden.

Und Sie haben immer noch dieselbe Funktionalität wie bisher gesehen:

* Großartige Editor-Unterstützung.
* Datenkonvertierung bei eingehenden Requests.
* Datenkonvertierung für Response-Daten.
* Datenvalidierung.

    username: Union[str, None] = None
    scopes: list[str] = []


class User(BaseModel):
    username: str
    email: Union[str, None] = None
    full_name: Union[str, None] = None
    disabled: Union[bool, None] = None


class UserInDB(User):
    hashed_password: str


pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

oauth2_scheme = OAuth2PasswordBearer(
    tokenUrl="token",

		t.Errorf("no error should happen, but got %v", err)
	}

	if result.Name != "groupby1" || result.Total != 660 {
		t.Errorf("name should be groupby, total should be 660, but got %+v", result)
	}

	var active bool
	if err := DB.Model(&User{}).Select("name, active, sum(age)").Where("name = ? and active = ?", "groupby", true).Group("name").Group("active").Row().Scan(&name, &active, &total); err != nil {

	args             []string

	// Typically use one of the three
	expectedOutput string // Expected constant output
	expectedString string // String output is expected to contain

	wantException bool
}

func TestProxyConfig(t *testing.T) {
	loggingConfig := map[string][]byte{
		"ztunnel-9v7nw": []byte("current log level is debug"),
	}
	cases := []execTestCase{
		{
			args:           []string{},

    }

    public void bool(BoolCall<JobLogCQ> boolLambda) {
        bool(boolLambda, null);
    }

    public void bool(BoolCall<JobLogCQ> boolLambda, ConditionOptionCall<BoolQueryBuilder> opLambda) {
        JobLogCQ mustQuery = new JobLogCQ();
        JobLogCQ shouldQuery = new JobLogCQ();
        JobLogCQ mustNotQuery = new JobLogCQ();
        JobLogCQ filterQuery = new JobLogCQ();

// The downside is that renaming uname or gname by the OS never takes effect.
var userMap, groupMap sync.Map // map[int]string

func statUnix(fi fs.FileInfo, h *Header, doNameLookups bool) error {
	sys, ok := fi.Sys().(*syscall.Stat_t)
	if !ok {
		return nil
	}
	h.Uid = int(sys.Uid)
	h.Gid = int(sys.Gid)
	if doNameLookups {
		// Best effort at populating Uname and Gname.

	}

	var results []result
	DB.Table("users").Select("name, age").Where("id in ?", []uint{user2.ID, user3.ID}).Scan(&results)

	sort.Slice(results, func(i, j int) bool {
		return strings.Compare(results[i].Name, results[j].Name) <= -1
	})

	if len(results) != 2 || results[0].Name != user2.Name || results[1].Name != user3.Name {
		t.Errorf("Scan into struct map, got %#v", results)
	}