@Throws(IOException::class)
      fun readInt(
        firstByte: Int,
        prefixMask: Int,
      ): Int {
        val prefix = firstByte and prefixMask
        if (prefix < prefixMask) {
          return prefix // This was a single byte value.
        }

        // This is a multibyte value. Read 7 bits at a time.
        var result = prefixMask
        var shift = 0

        } else if (Constants.FORM.equals(scheme)) {
            final String prefix = CRAWLER_WEB_AUTH + "." + webAuthName + ".";
            final Map<String, String> parameterMap = paramMap.entrySet()
                    .stream()
                    .filter(e -> e.getKey().startsWith(prefix))
                    .collect(Collectors.toMap(e -> e.getKey().substring(prefix.length()), Entry::getValue));
            authScheme = new FormScheme(parameterMap);

	}
}

func isAllowedRWAccess(r *http.Request, cred auth.Credentials, bucketName string) (rd, wr bool) {
	owner := cred.AccessKey == globalActiveCred.AccessKey

	// Set prefix value for "s3:prefix" policy conditionals.
	r.Header.Set("prefix", "")

	// Set delimiter value for "s3:delimiter" policy conditionals.
	r.Header.Set("delimiter", SlashSeparator)

	isAllowedAccess := func(bucketName string) (rd, wr bool) {

<img src="/img/tutorial/bigger-applications/image01.png">

## Incluir o mesmo roteador várias vezes com `prefixos` diferentes

Você também pode usar `.include_router()` várias vezes com o *mesmo* roteador usando prefixos diferentes.

Isso pode ser útil, por exemplo, para expor a mesma API sob prefixos diferentes, por exemplo, `/api/v1` e `/api/latest`.

    // Demonstrates observed equals() asymmetry when this is shorter than argument
    @Test
    @DisplayName("equals: this shorter but same prefix -> true (observed behavior)")
    void equals_thisShorterSamePrefix_true_dueToImplementation() {
        // Arrange: left shorter than right but with identical prefix
        SecurityBlob shorter = new SecurityBlob(new byte[] { 1, 2 });
        SecurityBlob longer = new SecurityBlob(new byte[] { 1, 2, 9 });

   * href="http://en.wikipedia.org/wiki/Lexicographical_order">lexicographically</a>. That is, it
   * compares, using {@link #compare(long, long)}), the first pair of values that follow any common
   * prefix, or when one array is a prefix of the other, treats the shorter array as the lesser. For
   * example, {@code [] < [1L] < [1L, 2L] < [2L] < [1L << 63]}.
   *

	peerRESTURL         = "url"
	peerRESTSha256Sum   = "sha256sum"
	peerRESTReleaseInfo = "releaseinfo"
	peerRESTExecAt      = "exec-at"

	peerRESTListenBucket = "bucket"
	peerRESTListenPrefix = "prefix"
	peerRESTListenSuffix = "suffix"
	peerRESTListenEvents = "events"
	peerRESTLogMask      = "log-mask"
)

func (s *erasureSets) ListMultipartUploads(ctx context.Context, bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (result ListMultipartsInfo, err error) {
	// In list multipart uploads we are going to treat input prefix as the object,
	// this means that we are not supporting directory navigation.
	set := s.getHashedSet(prefix)
	return set.ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
}

  public static final class ImmutableIntArrayTailSubListAsListGenerator
      extends TestIntegerListGenerator {
    @Override
    protected List<Integer> create(Integer[] elements) {
      Integer[] prefix = {86, 99};
      Integer[] all = concat(prefix, elements);
      return makeArray(all).subArray(2, elements.length + 2).asList();
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // used only from suite

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"syscall"
)

// Returns true if no error and there is no object or prefix inside this directory
func isDirEmpty(dirname string, legacy bool) bool {
	if legacy {
		// On filesystems such as btrfs, nfs this is not true, so fallback
		// to performing readdir() instead.