if b.r == 0 {
				// should be unreachable
				panic("bufio: tried to rewind past start of buffer")
			}
			b.r--
			line = line[:len(line)-1]
		}
		return line, true, nil
	}

	if len(line) == 0 {
		if err != nil {
			line = nil
		}
		return
	}
	err = nil

	if line[len(line)-1] == '\n' {
		drop := 1

from his book, `Rule Forty-two.  ALL PERSONS MORE THAN A MILE
HIGH TO LEAVE THE COURT.'

  Everybody looked at Alice.

  `I'M not a mile high,' said Alice.

  `You are,' said the King.

  `Nearly two miles high,' added the Queen.

  `Well, I shan't go, at any rate,' said Alice:  `besides,
that's not a regular rule:  you invented it just now.'

    /**
     * <code>type</code>の原型が<code>clazz</code>に代入可能であれば<code>true</code>を、
     * それ以外の場合は<code>false</code>を返します。
     *
     * @param type
     *            タイプ。{@literal null}であってはいけません
     * @param clazz
     *            クラス。{@literal null}であってはいけません
     * @return <code>type</code>の原型が<code>clazz</code>に代入可能であれば<code>true</code>
     */
    public static boolean isTypeOf(final Type type, final Class<?> clazz) {

 *     #removalListener}. Cache values may not be null.
 * @author Charles Fry
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class CacheBuilder<K, V> {
  private static final int DEFAULT_INITIAL_CAPACITY = 16;
  private static final int DEFAULT_CONCURRENCY_LEVEL = 4;

import junit.framework.TestSuite;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Unit tests for {@code LinkedHashMultimap}.
 *
 * @author Jared Levy
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public class LinkedHashMultimapTest extends TestCase {

  @J2ktIncompatible
  @GwtIncompatible // suite
  public static Test suite() {
    TestSuite suite = new TestSuite();

						isCreateEvent := event.IsModify() || event.IsCreate()
						isDeleteEvent := event.Type == etcd.EventTypeDelete

						switch {
						case isCreateEvent:
							ch <- iamWatchEvent{
								isCreated: true,
								keyPath:   string(event.Kv.Key),
							}
						case isDeleteEvent:
							ch <- iamWatchEvent{
								isCreated: false,
								keyPath:   string(event.Kv.Key),
							}
						}

					}

		s.prevSMA += (next - prev) / float64(s.window)
		s.CAvg += (next - s.CAvg) / float64(s.window)
	} else {
		s.CAvg = s.simpleMovingAvg()
		s.prevSMA = s.CAvg
	}
	if s.idx == s.window-1 {
		s.filledBuf = true
	}
	s.idx = (s.idx + 1) % s.window
}

func (s *SMA) simpleMovingAvg() float64 {
	if s.filledBuf {
		return s.prevSMA
	}
	var tot float64
	for _, r := range s.buf {
		tot += r
	}

    [http.middlewares.api-stripprefix.stripPrefix]
      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]
      [http.services.app.loadBalancer]
        [[http.services.app.loadBalancer.servers]]

    [http.middlewares.api-stripprefix.stripPrefix]
      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]
      [http.services.app.loadBalancer]
        [[http.services.app.loadBalancer.servers]]

{!../../docs_src/query_params_str_validations/tutorial009.py!}
```

## 弃用参数

现在假设你不再喜欢此参数。

你不得不将其保留一段时间，因为有些客户端正在使用它，但你希望文档清楚地将其展示为<abbr title ="已过时，建议不要使用它">已弃用</abbr>。

那么将参数 `deprecated=True` 传入 `Query`：

```Python hl_lines="18"
{!../../docs_src/query_params_str_validations/tutorial010.py!}
```

文档将会像下面这样展示它：