* note that the execution order of all listeners is ultimately chosen by the implementations of
   * the supplied executors.
   *
   * <p>This method is idempotent. Calling it several times in parallel is semantically equivalent
   * to calling it exactly once.
   *
   * @since 10.0 (present in 1.0 as {@code run})
   */
  public void execute() {
    // Lock while we update our state so the add method above will finish adding any listeners

my_second_user: User = User(**second_user_data)
```

/// info | Información

`**second_user_data` significa:

Pasa las claves y valores del dict `second_user_data` directamente como argumentos de clave-valor, equivalente a: `User(id=4, name="Mary", joined="2018-11-30")`

///

### Soporte del editor

`Optional[Something]` is actually a shortcut for `Union[Something, None]`, they are equivalent.

This also means that in Python 3.10, you can use `Something | None`:

//// tab | Python 3.10+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial009_py310.py!}
```

////

    checkEntryNotNull(key, value);
    return new AbstractMap.SimpleImmutableEntry<>(key, value);
  }

  /**
   * Returns a new builder. The generated builder is equivalent to the builder created by the {@link
   * Builder} constructor.
   */
  public static <K, V> Builder<K, V> builder() {
    return new Builder<>();
  }

  /**

    CharSource concatenated = CharSource.concat(cycle);

    String expected = "abcdabcd";

    // read the first 8 chars manually, since there's no equivalent to ByteSource.slice
    // TODO(cgdecker): Add CharSource.slice?
    StringBuilder builder = new StringBuilder();
    Reader reader = concatenated.openStream(); // no need to worry about closing

  RangeMap<K, V> subRangeMap(Range<K> range);

  /**
   * Returns {@code true} if {@code obj} is another {@code RangeMap} that has an equivalent {@link
   * #asMapOfRanges()}.
   */
  @Override
  boolean equals(@Nullable Object o);

  /** Returns {@code asMapOfRanges().hashCode()}. */
  @Override
  int hashCode();

**FastAPI** proporciona una herramienta conveniente para estructurar tu aplicación manteniendo toda la flexibilidad.

/// info | Información

Si vienes de Flask, esto sería el equivalente a los Blueprints de Flask.

///

## Un ejemplo de estructura de archivos

Digamos que tienes una estructura de archivos como esta:

```
.
├── app
│   ├── __init__.py
│   ├── main.py

**FastAPI** oferece uma ferramenta conveniente para estruturar sua aplicação, mantendo toda a flexibilidade.

/// info | Informação

Se você vem do Flask, isso seria o equivalente aos Blueprints do Flask.

///

## Um exemplo de estrutura de arquivos

Digamos que você tenha uma estrutura de arquivos como esta:

```
.
├── app
│   ├── __init__.py
│   ├── main.py

    // hashcodes from non-overlapping hash computations
    HashCode expected1 = randomHash(hashFunction, new Random(1L), numActions);
    HashCode expected2 = randomHash(hashFunction, new Random(2L), numActions);

    // equivalent, but overlapping, computations (should produce the same results as above)
    Random random1 = new Random(1L);
    Random random2 = new Random(2L);
    Hasher hasher1 = hashFunction.newHasher();

     */
    public String getPassword() {
        return password;
    }

    /**
     * Return the domain and username in the format:
     * {@code domain\\username}. This is equivalent to {@code toString()}.
     */
    @Override
    public String getName() {
        final boolean d = domain.length() > 0 && !domain.equals("?");
        return d ? domain + "\\" + username : username;
    }