/// tip | Dica

Você verá quais outras "coisas", além de funções, podem ser usadas como dependências no próximo capítulo.

///

Sempre que uma nova requisição for realizada, o **FastAPI** se encarrega de:

* Chamar sua dependência ("injetável") com os parâmetros corretos.
* Obter o resultado da função.

mportant}.flex-column{flex-direction:column!important}.flex-row-reverse{flex-direction:row-reverse!important}.flex-column-reverse{flex-direction:column-reverse!important}.flex-grow-0{flex-grow:0!important}.flex-grow-1{flex-grow:1!important}.flex-shrink-0{flex-shrink:0!important}.flex-shrink-1{flex-shrink:1!important}.flex-wrap{flex-wrap:wrap!important}.flex-nowrap{flex-wrap:nowrap!important}.flex-wrap-reverse{flex-wrap:wrap-reverse!important}.justify-content-start{justify-content:flex-start!impo...

     */
    final Stack<E> previousElements = new Stack<>();

    /**
     * {@link #nextElements} if {@code next()} was called more recently then {@code previous},
     * {@link #previousElements} if the reverse is true, or -- overriding both of these -- {@code
     * null} if {@code remove()} or {@code add()} has been called more recently than either. We use

 * such custom interfaces directly; they are implemented only in subclasses. Therefore, forwarding
 * {@code equals} would break symmetry, as the forwarding object might consider itself equal to the
 * object being tested, but the reverse could not be true. This behavior is consistent with the
 * JDK's collection wrappers, such as {@link java.util.Collections#unmodifiableCollection}. Use an

  @Override
  public Comparator<? super E> comparator() {
    Comparator<? super E> result = comparator;
    if (result == null) {
      return comparator = Ordering.from(forwardMultiset().comparator()).<E>reverse();
    }
    return result;
  }

  @Nullable private transient SortedSet<E> elementSet;

  @Override
  public SortedSet<E> elementSet() {
    SortedSet<E> result = elementSet;
    if (result == null) {

    }
    return (Ordering<@Nullable S>) result;
  }

  @Override
  @SuppressWarnings("unchecked") // TODO(kevinb): the right way to explain this??
  public <S extends Comparable<?>> Ordering<S> reverse() {
    return (Ordering<S>) ReverseNaturalOrdering.INSTANCE;
  }

  // preserving singleton-ness gives equals()/hashCode() for free
  private Object readResolve() {
    return INSTANCE;
  }

  @Override

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    img: https://fastapi.tiangolo.com/img/sponsors/propelauth.png
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    img: https://fastapi.tiangolo.com/img/sponsors/zuplo.png
  - url: https://liblab.com?utm_source=fastapi
    title: liblab - Generate SDKs from FastAPI

     */
    protected InputStream bodyStream;

    /**
     * The compression type for the request.
     */
    protected String compression = null;

    /**
     * The SSL socket factory for secure connections.
     */
    protected SSLSocketFactory sslSocketFactory = null;

    /**
     * The thread pool for executing the request.
     */
    protected ForkJoinPool threadPool;

    /**

Como o **FastAPI** é baseado na especificação **OpenAPI**, você obtém compatibilidade automática com muitas ferramentas, incluindo a documentação automática da API (fornecida pelo Swagger UI).

Uma vantagem particular que nem sempre é óbvia é que você pode **gerar clientes** (às vezes chamados de <abbr title="Software Development Kits">**SDKs**</abbr>) para a sua API, para muitas **linguagens de programação** diferentes.

## Geradores de Clientes OpenAPI

                List<E> list = new ArrayList<>();
                for (E e : delegate.order(insertionOrder)) {
                  list.add(e);
                }
                Collections.reverse(list);
                return list;
              }

              @Override
              public Set<E> create(Object... elements) {