// Borrowed from mutex_test.go
func HammerMutex(m *DRWMutex, loops int, cdone chan bool) {
	for range loops {
		m.Lock(id, source)
		m.Unlock(context.Background())
	}
	cdone <- true
}

// Borrowed from mutex_test.go
func TestMutex(t *testing.T) {
	loops := 200
	if testing.Short() {
		loops = 5
	}
	c := make(chan bool)
	m := NewDRWMutex(ds, "test")
	for range 10 {
		go HammerMutex(m, loops, c)

	Objects      []ObjectVersion  `json:",omitempty"` // Only set during MultiObject delete handler.
	Cred         auth.Credentials `json:"-"`
	Region       string           `json:"-"`
	Owner        bool             `json:"-"`
	AuthType     string           `json:"-"`
	tags         []KeyVal         // Any additional info not accommodated by above fields
	sync.RWMutex
}

// NewReqInfo :

	e.replCfg = rcfg
	return e
}

// IsPendingReplication checks if the object is pending replication.
func (e *Evaluator) IsPendingReplication(obj ObjectOpts) bool {
	if e.replCfg == nil {
		return false
	}
	if e.replCfg.HasActiveRules(obj.Name, true) && !obj.VersionPurgeStatus.Empty() {
		return true
	}

	return false
}

// and parses and instantiates macro definitions.
type Input struct {
	Stack
	includes        []string
	beginningOfLine bool
	ifdefStack      []bool
	macros          map[string]*Macro
	text            string // Text of last token returned by Next.
	peek            bool
	peekToken       ScanToken
	peekText        string
}

// NewInput returns an Input from the given path.
func NewInput(name string) *Input {

}


app = FastAPI()


@app.get(
    "/items/{item_id}",
    response_model=Item,
    responses={**responses, 200: {"content": {"image/png": {}}}},
)
async def read_item(item_id: str, img: bool | None = None):
    if img:
        return FileResponse("image.png", media_type="image/png")
    else:

class Invoice(BaseModel):
    id: str
    title: Union[str, None] = None
    customer: str
    total: float


class InvoiceEvent(BaseModel):
    description: str
    paid: bool


class InvoiceEventReceived(BaseModel):
    ok: bool


invoices_callback_router = APIRouter()


@invoices_callback_router.post(
    "{$callback_url}/invoices/{$request.body.id}", response_model=InvoiceEventReceived
)

}

// Decoder wraps an io.Reader to provide incremental decoding of
// JSON values
type Decoder struct {
	*scanner
	emitDepth     int
	maxDepth      int
	emitKV        bool
	emitRecursive bool
	objectAsKVS   bool

	depth   int
	scratch *scratch
	metaCh  chan *MetaValue
	err     error

	// follow line position to add context to errors
	lineNo    int
	lineStart int64
}

///

## Перетворення типу Query параметра

Ви також можете оголошувати параметри типу `bool`, і вони будуть автоматично конвертовані:

{* ../../docs_src/query_params/tutorial003_py310.py hl[7] *}

У цьому випадку, якщо Ви звернетесь до:


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

або

	root         string     `msg:"root"`
	fileNotFound bool       `msg:"fnf"`
	status       scanStatus `msg:"stat"`
	recursive    bool       `msg:"rec"`
	dataVersion  uint8      `msg:"v"`
}

func (m *metacache) finished() bool {
	return !m.ended.IsZero()
}

// worthKeeping indicates if the cache by itself is worth keeping.
func (m *metacache) worthKeeping() bool {
	if m == nil {
		return false
	}
	cache := m

  // TODO(b/74949947): mutations currently trigger a warning instead of a bad
  // status, this should be reverted when possible.
  tensorflow::gtl::FlatMap<TF_Session*, tensorflow::string> sessions
      TF_GUARDED_BY(mu);
  bool delete_requested TF_GUARDED_BY(mu);  // set true by TF_DeleteGraph

  // Used to link graphs contained in TF_WhileParams to the parent graph that
  // will eventually contain the full while loop.
  TF_Graph* parent;