{* ../../docs_src/query_params/tutorial006_py310.py hl[8] *}

Nesse caso, existem 3 parâmetros de consulta:

* `needy`, um `str` obrigatório.
* `skip`, um `int` com o valor padrão `0`.
* `limit`, um `int` opcional.

/// tip | Dica

Você também poderia usar `Enum` da mesma forma que com [Path Parameters](path-params.md#valores-predefinidos){.internal-link target=_blank}.

Finally, the identity of our heroes is protected! 🥷

It also re-declares `id: int`. By doing this, we are making a **contract** with the API clients, so that they can always expect the `id` to be there and to be an `int` (it will never be `None`).

/// tip

Having the return model ensure that a value is always available and always `int` (not `None`) is very useful for the API clients, they can write much simpler code having this certainty.

// concurrency, just threads and synchronization
// and foreign code on multiple pthreads.

package main

import (
	big "."
	"runtime"
)

func fibber(c chan *big.Int, out chan string, n int64) {
	// Keep the fibbers in dedicated operating system
	// threads, so that this program tests coordination
	// between pthreads and not just goroutines.
	runtime.LockOSThread()

	i := big.NewInt(n)

	//export MyFunction
	func MyFunction(arg1, arg2 int, arg3 string) int64 {...}

	//export MyFunction2
	func MyFunction2(arg1, arg2 int, arg3 string) (int64, *C.char) {...}

They will be available in the C code as:

	extern GoInt64 MyFunction(int arg1, int arg2, GoString arg3);
	extern struct MyFunction2_return MyFunction2(int arg1, int arg2, GoString arg3);

    private static final Logger log = LoggerFactory.getLogger(SmbFileIntegrationTest.class);

    private static final String IMAGE_NAME = "dperson/samba:latest";
    private static final int SMB_PORT = 445;
    private static final int NETBIOS_PORT = 139;

    private static final String WORKGROUP = "WORKGROUP";
    private static final String USERNAME = "smbuser";
    private static final String PASSWORD = "smbpass";

@NullUnmarked
@AndroidIncompatible // test-suite builders
public class FloatArrayAsListTest extends TestCase {

  private static List<Float> asList(Float[] values) {
    float[] temp = new float[values.length];
    for (int i = 0; i < values.length; i++) {
      temp[i] = checkNotNull(values[i]); // checkNotNull for GWT (do not optimize).
    }
    return Floats.asList(temp);
  }

  @J2ktIncompatible
  @GwtIncompatible // suite

@NullUnmarked
@AndroidIncompatible // test-suite builders
public class FloatArrayAsListTest extends TestCase {

  private static List<Float> asList(Float[] values) {
    float[] temp = new float[values.length];
    for (int i = 0; i < values.length; i++) {
      temp[i] = checkNotNull(values[i]); // checkNotNull for GWT (do not optimize).
    }
    return Floats.asList(temp);
  }

  @J2ktIncompatible
  @GwtIncompatible // suite

    public synchronized PagingList<ProtwordsItem> selectList(final int offset, final int size) {
        if (protwordsItemList == null) {
            reload(null);
        }

        if (offset >= protwordsItemList.size() || offset < 0) {
            return new PagingList<>(Collections.<ProtwordsItem> emptyList(), offset, size, protwordsItemList.size());
        }

        int toIndex = offset + size;

    }

    /**
     * Returns the value of a {@literal static} {@link Field} as an int.
     *
     * @param field the field (must not be {@literal null})
     * @return the field value
     * @throws IllegalAccessRuntimeException {@link IllegalAccessException} if an error occurs
     * @see #getInt(Field, Object)
     */
    public static int getInt(final Field field) throws IllegalAccessRuntimeException {

Esto sería útil si deseas recibir claves que aún no conoces.

---

Otro caso útil es cuando deseas tener claves de otro tipo (por ejemplo, `int`).

Eso es lo que vamos a ver aquí.

En este caso, aceptarías cualquier `dict` siempre que tenga claves `int` con valores `float`:

{* ../../docs_src/body_nested_models/tutorial009_py39.py hl[7] *}

/// tip | Consejo