Although the [Tutorial - User Guide](../tutorial/index.md){.internal-link target=_blank} and this **Advanced User Guide** are written as a guided tutorial (like a book) and should be enough for you to **learn FastAPI**, you might want to complement it with additional courses.

Or it might be the case that you just prefer to take other courses because they adapt better to your learning style.

  @GwtIncompatible // ConcurrentLinkedQueue
  static class QueuingRemovalListener<K, V> extends ConcurrentLinkedQueue<RemovalNotification<K, V>>
      implements RemovalListener<K, V> {

    @Override
    public void onRemoval(RemovalNotification<K, V> notification) {
      add(notification);
    }
  }

  /**

  }

  public static class NoOpRunnable implements Runnable {
    @Override
    public void run() {}
  }

  public static class NoOpCallable implements Callable<Object> {
    @Override
    public Object call() {
      return Boolean.TRUE;
    }
  }

  public static final String TEST_STRING = "a test string";

  public static class StringTask implements Callable<String> {
    @Override

package cmd

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *AccElem) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()

import static java.util.Arrays.asList;

import com.google.common.annotations.GwtCompatible;
import java.io.Serializable;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A class that implements {@code Comparable} without generics, such as those found in libraries
 * that support Java 1.4 and before. Our library needs to do the bare minimum to accommodate such

private void DefaultDownloader$SystemPropertiesProx(); protected java.net.PasswordAuthenticati getPasswordAuthentic(); } org/apache/maven/wrapper/DefaultDownloader.class package org.apache.maven.wrapper; public synchronized class DefaultDownloader implements Downloader { private static final int PROGRESS_CHUNK = 500000; private static final int BUFFER_SIZE = 10000; private final String applicationName; private final String applicationVersion; public void DefaultDownloader(String, String); private void...

    String name();
  }

  public interface InternerImplEnum {
    <E> Interner<E> create(Collection<E> contents);

    String name();
  }

  public enum SetImpl implements CollectionsImplEnum {
    HashSetImpl {
      @Override
      public <E extends Comparable<E>> Set<E> create(Collection<E> contents) {
        return new HashSet<E>(contents);
      }
    },
    LinkedHashSetImpl {

 * of the public API. In particular, this class can be changed or deleted without prior notice.
 *
 */
@Deprecated
public class LegacyLocalRepositoryManager implements LocalRepositoryManager {

    private final ArtifactRepository delegate;

    private final LocalRepository repo;

    private final boolean realLocalRepo;

    public static RepositorySystemSession overlay(

    assertTrue(runnable2.run);
    assertEquals((Integer) 3, runnableFuture2.get());
  }

  private static class TestRunnable implements Runnable {
    boolean run = false;

    @Override
    public void run() {
      run = true;
    }
  }

  private static class TestCallable implements Callable<String> {
    @Override
    public String call() {
      return "foo";
    }
  }

    assertTrue(runnable2.run);
    assertEquals((Integer) 3, runnableFuture2.get());
  }

  private static class TestRunnable implements Runnable {
    boolean run = false;

    @Override
    public void run() {
      run = true;
    }
  }

  private static class TestCallable implements Callable<String> {
    @Override
    public String call() {
      return "foo";
    }
  }