* ListenableFuture}</a>.
 *
 * <p>This class is GWT-compatible.
 *
 * <h3>Purpose</h3>
 *
 * <p>The main purpose of {@code ListenableFuture} is to help you chain together a graph of
 * asynchronous operations. You can chain them together manually with calls to methods like {@link
 * Futures#transform(ListenableFuture, com.google.common.base.Function, Executor) Futures.transform}

But when the form includes files, it is encoded as `multipart/form-data`. If you use `File`, **FastAPI** will know it has to get the files from the correct part of the body.

If you want to read more about these encodings and form fields, head to the [<abbr title="Mozilla Developer Network">MDN</abbr> web docs for `POST`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST).

///

/// warning

 * MinMaxPriorityQueue<User> users = MinMaxPriorityQueue.orderedBy(userComparator)
 *     .maximumSize(1000)
 *     .create();
 * }
 *
 * <p>As a {@link Queue} it functions exactly as a {@link PriorityQueue}: its head element -- the
 * implicit target of the methods {@link #peek()}, {@link #poll()} and {@link #remove()} -- is
 * defined as the <i>least</i> element in the queue according to the queue's comparator. But unlike

        assertTrue(RootAction.class.isAssignableFrom(actionClass2));
    }

    @Test
    public void test_genericTypeSafety_multipleDifferentSubclasses() {
        // Test that different instances can hold different subclass types
        UserRoleLoginException exception1 = new UserRoleLoginException(RootAction.class);
        UserRoleLoginException exception2 = new UserRoleLoginException(TestAction.class);

  private static final int SHORT_MAX_SIZE = 1 << Short.SIZE; // 2^16 = 65_536
  private static final int SHORT_MASK = (1 << Short.SIZE) - 1; // 2^16 - 1 = 65_535

  /**
   * Returns the power of 2 hashtable size required to hold the expected number of items or the
   * minimum hashtable size, whichever is greater.
   */
  static int tableSize(int expectedSize) {

////

...as in:

{* ../../docs_src/dependencies/tutorial003_an_py310.py hl[19] *}

But declaring the type is encouraged as that way your editor will know what will be passed as the parameter `commons`, and then it can help you with code completion, type checks, etc:

<img src="/img/tutorial/dependencies/image02.png">

## Shortcut { #shortcut }

But you see that we are having some code repetition here, writing `CommonQueryParams` twice:

## 未来 { #future }

至此，**FastAPI** 及其理念已经为很多人所用。

对于很多用例，它比以前很多备选方案都更适用。

很多开发者和开发团队已经依赖 **FastAPI** 开发他们的项目（包括我和我的团队）。

但，**FastAPI** 仍有很多改进的余地，也还需要添加更多的功能。

**FastAPI** 前景光明。

{
  "performanceTests" : [ {
    "testId" : "org.gradle.performance.crossbuild.TaskAvoidancePerformanceTest.help with lazy and eager tasks",
    "groups" : [ {
      "testProject" : "largeJavaMultiProject",
      "coverage" : {
        "per_commit" : [ "linux" ]
      }
    }, {
      "testProject" : "largeMonolithicJavaProject",
      "coverage" : {
        "per_commit" : [ "linux" ]
      }
    } ]
  }, {

#### Operación { #operation }

"Operación" aquí se refiere a uno de los "métodos" HTTP.

Uno de:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...y los más exóticos:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

En el protocolo HTTP, puedes comunicarte con cada path usando uno (o más) de estos "métodos".

---

« Opération » fait ici référence à l’une des « méthodes » HTTP.

L’une de :

* `POST`
* `GET`
* `PUT`
* `DELETE`

... et les plus exotiques :

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

Dans le protocole HTTP, vous pouvez communiquer avec chaque chemin en utilisant une (ou plusieurs) de ces « méthodes ».

---