否則，`/users/{user_id}` 的路徑也會匹配 `/users/me`，並「認為」它收到一個值為 `"me"` 的 `user_id` 參數。

同樣地，你不能重新定義同一路徑操作：

{* ../../docs_src/path_params/tutorial003b_py310.py hl[6,11] *}

因為第一個會被優先使用（路徑先匹配到）。

## 預先定義的值 { #predefined-values }

如果你有一個接收「路徑參數」的「路徑操作」，但你希望可用的「路徑參數」值是預先定義好的，你可以使用標準的 Python <abbr title="Enumeration - 列舉">`Enum`</abbr>。

### 建立 `Enum` 類別 { #create-an-enum-class }

匯入 `Enum` 並建立一個同時繼承自 `str` 與 `Enum` 的子類別。

         * @return the new reference count after decrementing
         */
        public int decrement() {
            return count.decrementAndGet();
        }
    }

    /**
     * Enumeration of predefined statistics actions that can be recorded
     * during crawler operations. Each action represents a specific event
     * or milestone in the crawling process.
     */
    public enum StatsAction {

For simplicity, here we are just adding the scopes received directly to the token.

But in your application, for security, you should make sure you only add the scopes that the user is actually able to have, or the ones you have predefined.

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## Declare scopes in *path operations* and dependencies { #declare-scopes-in-path-operations-and-dependencies }

* They will be marked with a list of tags that contain a single string `"items"`.
    * These "tags" are especially useful for the automatic interactive documentation systems (using OpenAPI).
* All of them will include the predefined `responses`.
* All these *path operations* will have the list of `dependencies` evaluated/executed before them.
    * If you also declare dependencies in a specific *path operation*, **they will be executed too**.

Porém em sua aplicação, por segurança, você deveria garantir que você apenas adiciona os escopos que o usuário possui permissão de fato, ou aqueles que você predefiniu.

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## Declare escopos em *operações de rota* e dependências { #declare-scopes-in-path-operations-and-dependencies }

Mais dans votre application, pour la sécurité, vous devez vous assurer de n’ajouter que les scopes que l’utilisateur est réellement autorisé à avoir, ou ceux que vous avez prédéfinis.

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## Déclarer des scopes dans les chemins d’accès et les dépendances { #declare-scopes-in-path-operations-and-dependencies }

    * Ces « tags » sont particulièrement utiles pour les systèmes de documentation interactive automatique (utilisant OpenAPI).
* Ils incluront tous les `responses` prédéfinies.
* Tous ces *chemins d'accès* auront la liste des `dependencies` évaluées/exécutées avant eux.
    * Si vous déclarez également des dépendances dans un *chemin d'accès* spécifique, **elles seront aussi exécutées**.

                this.rightCalendar.month.hour(hour).minute(minute).second(second);
            }

            this.renderCalendar('left');
            this.renderCalendar('right');

            //highlight any predefined range matching the current start and end dates
            this.container.find('.ranges li').removeClass('active');
            if (this.endDate == null) return;

            this.calculateChosenLabel();
        },

 */
@J2ktIncompatible
@GwtIncompatible
public class CycleDetectingLockFactory {

  /**
   * Encapsulates the action to be taken when a potential deadlock is encountered. Clients can use
   * one of the predefined {@link Policies} or specify a custom implementation. Implementations must
   * be thread-safe.
   *
   * @since 13.0
   */
  public interface Policy {

    /**

to avoid ambiguity, division or right shift where the right operand's
high bit is set is rejected.
</p>

<h3 id="symbols">Symbols</h3>

<p>
Some symbols, such as <code>R1</code> or <code>LR</code>,
are predefined and refer to registers.
The exact set depends on the architecture.
</p>

<p>
There are four predeclared symbols that refer to pseudo-registers.