| Headers.of(Map<String, String>)     | Map<String, String>.toHeaders() |
| HttpUrl.get(String)                 | String.toHttpUrl()              |
| HttpUrl.get(URI)                    | URI.toHttpUrlOrNull()           |
| HttpUrl.get(URL)                    | URL.toHttpUrlOrNull()           |
| HttpUrl.parse(String)               | String.toHttpUrlOrNull()        |

        // Arrange: program send() to simulate first, next, next(NO_MORE_FILES)
        List<String[]> batches = new ArrayList<>();
        batches.add(new String[] { ".", "..", "a", "b" }); // first batch, dot entries filtered
        batches.add(new String[] { "c" }); // second batch
        batches.add(new String[] {}); // last -> NO_MORE_FILES

        // send() answer that mutates the provided response

## Usa `CORSMiddleware`

Puedes configurarlo en tu aplicación **FastAPI** usando el `CORSMiddleware`.

* Importa `CORSMiddleware`.
* Crea una lista de orígenes permitidos (como strings).
* Agrégalo como un "middleware" a tu aplicación **FastAPI**.

También puedes especificar si tu backend permite:

* Credenciales (headers de autorización, cookies, etc).

        /** Bug report properties. */
        protected List<Map<String, String>> bugReportProps;

        /**
         * Sets the environment properties.
         * @param envProps The environment properties.
         * @return This ApiSystemInfoResponse instance.
         */
        public ApiSystemInfoResponse envProps(final List<Map<String, String>> envProps) {
            this.envProps = envProps;

     */
    String decimal = "(?:\\d+#(?:\\.\\d*#)?|\\.\\d+#)";
    String completeDec = decimal + "(?:[eE][+-]?\\d+#)?[fFdD]?";
    String hex = "(?:[0-9a-fA-F]+#(?:\\.[0-9a-fA-F]*#)?|\\.[0-9a-fA-F]+#)";
    String completeHex = "0[xX]" + hex + "[pP][+-]?\\d+#[fFdD]?";
    String fpPattern = "[+-]?(?:NaN|Infinity|" + completeDec + "|" + completeHex + ")";
    fpPattern =

   * NumberFormatException} if the input string is invalid.
   *
   * <p><b>Warning:</b> please see {@link Short#decode} to understand exactly how strings are
   * parsed. For example, the string {@code "0123"} is treated as <i>octal</i> and converted to the
   * value {@code 83}.
   *
   * @since 16.0
   */
  public static Converter<String, Short> stringConverter() {
    return ShortConverter.INSTANCE;
  }

  /**

   * NumberFormatException} if the input string is invalid.
   *
   * <p><b>Warning:</b> please see {@link Short#decode} to understand exactly how strings are
   * parsed. For example, the string {@code "0123"} is treated as <i>octal</i> and converted to the
   * value {@code 83}.
   *
   * @since 16.0
   */
  public static Converter<String, Short> stringConverter() {
    return ShortConverter.INSTANCE;
  }

  /**

     *   <li>' with &amp;apos;</li>
     * </ul>
     * Additionally, it strips invalid XML characters from the input string.
     *
     * @param value the input string to be escaped
     * @return the escaped XML string with invalid characters removed
     */
    public static String escapeXml(final String value) {
        return stripInvalidXMLCharacters(//
                value//

///

## Types and Validation { #types-and-validation }

These environment variables can only handle **text strings**, as they are external to Python and have to be compatible with other programs and the rest of the system (and even with different operating systems, as Linux, Windows, macOS).

## Usar `CORSMiddleware`

Você pode configurá-lo em sua aplicação **FastAPI** usando o `CORSMiddleware`.

* Importe `CORSMiddleware`.
* Crie uma lista de origens permitidas (como strings).
* Adicione-a como um "middleware" à sua aplicação **FastAPI**.

Você também pode especificar se o seu backend permite:

* Credenciais (Cabeçalhos de autorização, Cookies, etc).