* support {@link Iterator#remove}. If the table is modified after an iterator is created, the
 * iterator remains valid.
 *
 * <p>This class requires less memory than the {@link HashBasedTable} and {@link TreeBasedTable}
 * implementations, except when the table is sparse.
 *
 * <p>Null row keys or column keys are not permitted.
 *

    }
    return InetAddress.getByAddress(reversed);
  }

  /**
   * Returns a new InetAddress that is one less than the passed in address. This method works for
   * both IPv4 and IPv6 addresses.
   *
   * @param address the InetAddress to decrement
   * @return a new InetAddress that is one less than the passed in address
   * @throws IllegalArgumentException if InetAddress is at the beginning of its range
   * @since 18.0

   */
  public static CharMatcher breakingWhitespace() {
    return BreakingWhitespace.INSTANCE;
  }

  /**
   * Determines whether a character is ASCII, meaning that its code point is less than 128.
   *
   * @since 19.0 (since 1.0 as constant {@code ASCII})
   */
  public static CharMatcher ascii() {
    return Ascii.INSTANCE;
  }

  /**

     * Luckily, our nullness checker is smart enough to realize that `convert` has @PolyNull-like
     * behavior, so it knows that `convert(a)` returns a non-nullable value, and we don't need to
     * perform even a cast, much less a runtime check.
     *
     * All that said, don't forget that everyone should call converter.convert() instead of
     * converter.apply(), anyway. If clients use only converter.convert(), then their nullness

```

</div>

Et ouvrez les documents à [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

Vous verrez la documentation API automatique, incluant les chemins de tous les sous-modules, utilisant les bons chemins (et préfixes) et les bons tags :

<img src="/img/tutorial/bigger-applications/image01.png">

<summary>Acerca del comando <code>fastapi dev</code>...</summary>

El comando `fastapi dev` lee tu archivo `main.py` automáticamente, detecta la app **FastAPI** en él y arranca un servidor usando [Uvicorn](https://www.uvicorn.dev).

Por defecto, `fastapi dev` comenzará con auto-recarga habilitada para el desarrollo local.

Puedes leer más sobre esto en la [documentación del CLI de FastAPI](https://fastapi.tiangolo.com/es/fastapi-cli/).

Vemos que vamos a necesitar algunas dependencias usadas en varios lugares de la aplicación.

Así que las ponemos en su propio módulo `dependencies` (`app/dependencies.py`).

Ahora utilizaremos una dependencia simple para leer un header `X-Token` personalizado:

{* ../../docs_src/bigger_applications/app_an_py310/dependencies.py hl[3,6:8] title["app/dependencies.py"] *}

/// tip | Consejo

FastAPI é open source e baseado em padrões. Você pode implantar aplicações FastAPI em qualquer provedor de nuvem que escolher.

Siga os tutoriais do seu provedor de nuvem para implantar aplicações FastAPI com eles. 🤓

## Performance { #performance }

				writeErrorResponse(r.Context(), w, errorCodes.ToAPIErr(errCode), r.URL)
				atomic.AddUint64(&globalHTTPStats.rejectedRequestsTime, 1)
				return
			}
			// Verify if the request date header is shifted by less than globalMaxSkewTime parameter in the past
			// or in the future, reject request otherwise.
			curTime := UTCNow()
			if curTime.Sub(amzDate) > globalMaxSkewTime || amzDate.Sub(curTime) > globalMaxSkewTime {
				if ok {

    forbidden by `URI`.
 *  Fix: When a connect times out, attempt an alternate route. Previously route
    selection was less efficient when differentiating failures.
 *  New: `Response.peekBody()` lets you access the response body without
    consuming it. This may be handy for interceptors!
 *  New: `HttpUrl.newBuilder()` resolves a link to a builder.