*
     * Thread1: calls setException(), which returns true, context switch before it can CAS
     * seenExceptions to its exception
     *
     * Thread2: calls setException(), which returns false, CASes seenExceptions to its exception,
     * and wrongly believes that its exception is new (leading it to logging it when it shouldn't)
     *

    URLClassLoader shadowLoader = new URLClassLoader(getClassPathUrls(), null);
    @SuppressWarnings("unchecked")
    Class<TestEnum> shadowTestEnum =
        (Class<TestEnum>) Class.forName(TestEnum.class.getName(), false, shadowLoader);
    assertNotSame(shadowTestEnum, TestEnum.class);
    // We can't write Set<TestEnum> because that is a Set of the TestEnum from the original
    // ClassLoader.

                }
                if ( i < len && data[ i ] == '.' ) {
                    dots++;
                    i++;
                }
            }
        }

        return false;
    }

    /**
     * Perform DNS SRV lookup on successively shorter suffixes of name
     * and return successful suffix or throw an UnknownHostException.
     * import javax.naming.*;

        }
      };

  private static final Supplier<Semaphore> SEMAPHORE_SUPPLER =
      new Supplier<Semaphore>() {
        @Override
        public Semaphore get() {
          return new Semaphore(1, false);
        }
      };

  private static List<Striped<?>> weakImplementations() {
    return ImmutableList.<Striped<?>>builder()
        .add(new Striped.SmallLazyStriped<ReadWriteLock>(50, READ_WRITE_LOCK_SUPPLIER))

          <!-- We add the link ourselves, both so that we can choose Java 9 over the version that -source suggests and so that we can solve the JSR305 problem described below. -->
          <detectJavaApiLink>false</detectJavaApiLink>
          <offlineLinks>

```

或

```
http://127.0.0.1:8000/items/foo?short=on
```

或

```
http://127.0.0.1:8000/items/foo?short=yes
```

或其它任意大小写形式（大写、首字母大写等），函数接收的 `short` 参数都是布尔值 `True`。值为 `False` 时也一样。


## 多个路径和查询参数

**FastAPI** 可以识别同时声明的多个路径参数和查询参数。

而且声明查询参数的顺序并不重要。

FastAPI 通过参数名进行检测：

//// tab | Python 3.10+

```Python hl_lines="6 8"

	crypto.RemoveInternalEntries(args.Object.UserDefined)

	if globalHTTPListen.NumSubscribers(pubsub.MaskFromMaskable(args.EventName)) > 0 {
		globalHTTPListen.Publish(args.ToEvent(false))
	}

	globalEventNotifier.Send(args)

        if (accessTimeout != null) {
            accessTimeoutTarget = new AccessTimeoutTarget(Thread.currentThread());
            accessTimeoutTask = TimeoutManager.getInstance().addTimeoutTarget(accessTimeoutTarget, accessTimeout, false);
        }

        final ExtractData data = new ExtractData();
        final HttpPost httpPost = new HttpPost(url);

	// Filter
	if !o.Recursive {
		entries.o = make(metaCacheEntries, 0, o.Limit)
		pastPrefix := false
		err := r.readFn(func(entry metaCacheEntry) bool {
			if o.Prefix != "" && !strings.HasPrefix(entry.name, o.Prefix) {
				// We are past the prefix, don't continue.
				pastPrefix = true
				return false
			}

        });
    }

    private void importBulk(final String fileName, final File tempFile) {
        final ObjectMapper mapper = new ObjectMapper();
        final AtomicBoolean resetJobs = new AtomicBoolean(false);
        try (CurlResponse response = ComponentUtil.getCurlHelper().post("/_bulk").onConnect((req, con) -> {
            con.setDoOutput(true);