// a ClassCastException is what's supposed to happen!
    @SuppressWarnings("unchecked")
    E e = (E) t;
    int unused = comparator().compare(e, e);
    return t;
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    return delegate.equals(obj);
  }

  @Override
  public int hashCode() {
    return delegate.hashCode();
  }

  @Override
  public String toString() {

  }

  /**
   * @return an array of the proper size with {@code null} as the key of the middle element.
   */
  protected Entry<K, V>[] createArrayWithNullKey() {
    Entry<K, V>[] array = createSamplesArray();
    int nullKeyLocation = getNullLocation();
    Entry<K, V> oldEntry = array[nullKeyLocation];
    array[nullKeyLocation] = mapEntry(null, oldEntry.getValue());
    return array;
  }

  /**

      checkNotNull(mutex);
      this.delegate = delegate;
      this.mutex = mutex;
    }

    @Override
    protected Map<K, V> delegate() {
      return delegate;
    }

    @Override
    public int size() {
      assertTrue(Thread.holdsLock(mutex));
      return super.size();
    }

    @Override
    public boolean isEmpty() {
      assertTrue(Thread.holdsLock(mutex));
      return super.isEmpty();
    }

     * @param sqlState
     *            SQLステート
     * @param vendorCode
     *            ベンダーコード
     */
    public ClSQLException(final String messageCode, final Object[] args, final String sqlState, final int vendorCode) {
        this(messageCode, args, sqlState, vendorCode, null, null);
    }

    /**
     * {@link ClSQLException}を作成します。
     *
     * @param messageCode
     *            メッセージコード

  private static final ImmutableList<Range<Integer>> QUERY_RANGES;

  private static final int MIN_BOUND = -1;
  private static final int MAX_BOUND = 1;

  static {
    ImmutableList.Builder<Range<Integer>> queryBuilder = ImmutableList.builder();

    queryBuilder.add(Range.<Integer>all());

    for (int i = MIN_BOUND; i <= MAX_BOUND; i++) {
      for (BoundType boundType : BoundType.values()) {

   * Other dispatchers can be configured. They can vary the response based on timing or the content
   * of the request.
   */
  var dispatcher: Dispatcher = QueueDispatcher()

  private var portField: Int = -1
  val port: Int
    get() {
      before()
      return portField
    }

  val hostName: String
    get() {
      before()
      return _inetSocketAddress!!.address.hostName
    }

 * limitations under the License.
 */

package com.google.common.primitives;

import com.google.common.annotations.GwtCompatible;

@GwtCompatible(emulated = true)
class TestPlatform {
  static int reduceIterationsIfGwt(int iterations) {
    return iterations / 10;
  }

@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

}

// Msgsize returns the size of an empty JSON object.
func (j *JSON[T]) Msgsize() int {
	return j.p.emptySz
}

// NoPayload is a type that can be used for handlers that do not use a payload.
type NoPayload struct{}

// Msgsize returns 0.
func (p NoPayload) Msgsize() int {
	return 0
}

// UnmarshalMsg satisfies the interface, but is a no-op.

```Python hl_lines="10"
{!../../docs_src/query_params/tutorial006.py!}
```

위 예시에서는 3가지 쿼리 매개변수가 있습니다:

* `needy`, 필수적인 `str`.
* `skip`, 기본값이 `0`인 `int`.
* `limit`, 선택적인 `int`.

/// tip | "팁"

[경로 매개변수](path-params.md#_8){.internal-link target=_blank}와 마찬가지로 `Enum`을 사용할 수 있습니다.