new IteratorOperation() {
        @Override
        public @Nullable Object execute(Iterator<?> iterator) {
          iterator.remove();
          return null;
        }
      };

  private static final IteratorOperation NEXT_METHOD =
      new IteratorOperation() {
        @Override
        public @Nullable Object execute(Iterator<?> iterator) {
          return iterator.next();
        }
      };

import java.io.PrintWriter;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.apache.maven.jline.JLineMessageBuilderFactory;
import org.eclipse.aether.DefaultRepositorySystemSession;
import org.eclipse.aether.transfer.TransferCancelledException;

{* ../../docs_src/background_tasks/tutorial001.py hl[1,13] *}

**FastAPI** créera l'objet de type `BackgroundTasks` pour vous et le passera comme paramètre.

## Créer une fonction de tâche

Une fonction à exécuter comme tâche d'arrière-plan est juste une fonction standard qui peut recevoir des paramètres.

Elle peut être une fonction asynchrone (`async def`) ou une fonction normale (`def`), **FastAPI** saura la gérer correctement.

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.concurrent.Callable
import java.util.concurrent.Executors
import java.util.concurrent.Future

/**
 * See https://github.com/gradle/gradle-private/issues/3919
 *
 * When merging `releaseX` branch into `master`, we should only use the release note from the `master` branch,

### Deletar um Hero

Também podemos **deletar** um `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[66:73] hl[71] *}

### Executar o App

Você pode executar o app:

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

package okhttp3.internal.concurrent

/**
 * A unit of work that can be executed one or more times.
 *
 * Recurrence
 * ----------
 *
 * Tasks control their recurrence schedule. The [runOnce] function returns -1L to signify that the
 * task should not be executed again. Otherwise it returns a delay until the next execution.
 *
 * A task has at most one next execution. If the same task instance is scheduled multiple times, the

 *
 * All event methods must execute fast, without external locking, cannot throw exceptions, attempt
 * to mutate the event parameters, or be re-entrant back into the client. Any IO - writing to files
 * or network should be done asynchronously.
 */
abstract class EventListener {
  /**
   * Invoked as soon as a call is enqueued or executed by a client. In case of thread or stream

            if (!p.isAlive()) {
                return;
            }

            executed.set(true);

            if (logger.isDebugEnabled()) {
                logger.debug("Interrupting a stream thread.");
            }
            ist.interrupt();

            CommonPoolUtil.execute(() -> {
                try {
                    CloseableUtil.closeQuietly(p.getInputStream());

import java.io.Serializable
import java.util.concurrent.atomic.AtomicBoolean

/**
 * Register a build service that monitors a list of tasks and reports CACHE_MISS if they're actually executed.
 */
if (buildCacheEnabled()) {
    registerBuildScanInfoCollectingService(CacheMissMonitorBuildService::class.java, ::isCacheMissMonitoredTask) { cacheMissInBuildLogic, cacheMissInMainBuild ->
        buildFinished {

import java.net.InetAddress
import java.net.InetSocketAddress
import java.net.ServerSocket
import java.security.PrivateKey
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors
import java.util.concurrent.Future
import javax.net.ServerSocketFactory
import javax.net.SocketFactory
import javax.net.ssl.SSLSocket
import okhttp3.Handshake
import okhttp3.Handshake.Companion.handshake