testRotate(new boolean[] {true}, 1, 0, 1, new boolean[] {true});
    testRotate(new boolean[] {true}, 1, 1, 1, new boolean[] {true});

    // Rotate the central 5 elements, leaving the ends as-is
    testRotate(
        new boolean[] {false, true, false, true, false, true, false},
        -6,
        1,
        6,
        new boolean[] {false, false, true, false, true, true, false});

You stand in line while several (let's say 8) cashiers that at the same time are cooks take the orders from the people in front of you.

Everyone before you is waiting for their burgers to be ready before leaving the counter because each of the 8 cashiers goes and prepares the burger right away before getting the next order.

<img src="/img/async/parallel-burgers/parallel-burgers-01.png" class="illustration">

	startTime := time.Now()
	return func(event string, metadata map[string]string, err error) {
		duration := time.Since(startTime)
		if globalTrace.NumSubscribers(madmin.TraceILM) > 0 {
			e := ""
			if err != nil {
				e = err.Error()
			}
			globalTrace.Publish(ilmTrace(startTime, duration, oi, event, metadata, e))
		}
	}
}

					hdr.Xattrs = make(map[string]string)
				}
				hdr.Xattrs[k[len(paxSchilyXattr):]] = v
			}
		}
		if err != nil {
			return ErrHeader
		}
	}
	hdr.PAXRecords = paxHdrs
	return nil
}

// parsePAX parses PAX headers.
// If an extended header (type 'x') is invalid, ErrHeader is returned.
func parsePAX(r io.Reader) (map[string]string, error) {
	buf, err := readSpecialFile(r)

	if sc := r.Header.Get(xhttp.AmzStorageClass); sc != "" {
		if !storageclass.IsValid(sc) {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidStorageClass), r.URL)
			return
		}
	}

	encMetadata := map[string]string{}

	if crypto.Requested(r.Header) {
		if crypto.SSECopy.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidEncryptionParameters), r.URL)
			return
		}

}

// Key returns the key.
func (h dataUsageHash) Key() string {
	return string(h)
}

func (d *dataUsageCache) flattenChildrens(root dataUsageEntry) (m map[string]dataUsageEntry) {
	m = make(map[string]dataUsageEntry)
	for id := range root.Children {
		e := d.Cache[id]
		if len(e.Children) > 0 {
			e = d.flatten(e)
		}
		m[id] = e
	}
	return m
}

  public void testTryParseHex() {
    for (String signChar : ImmutableList.of("", "+", "-")) {
      for (String hexPrefix : ImmutableList.of("0x", "0X")) {
        for (String iPart : ImmutableList.of("", "0", "1", "F", "f", "c4", "CE")) {
          for (String fPart : ImmutableList.of("", ".", ".F", ".52", ".a")) {
            for (String expMarker : ImmutableList.of("p", "P")) {

        .isNull();
    assertThat(Longs.tryParse("\u0662\u06f3")).isNull();
  }

  /**
   * Applies {@link Longs#tryParse(String)} to the given string and asserts that the result is as
   * expected.
   */
  private static void tryParseAndAssertEquals(Long expected, String value) {
    assertThat(Longs.tryParse(value)).isEqualTo(expected);
  }

  public void testTryParse_radix() {

    testRotate(new short[] {1}, 0, 0, 1, new short[] {1});
    testRotate(new short[] {1}, 1, 0, 1, new short[] {1});
    testRotate(new short[] {1}, 1, 1, 1, new short[] {1});

    // Rotate the central 5 elements, leaving the ends as-is
    testRotate(new short[] {0, 1, 2, 3, 4, 5, 6}, -6, 1, 6, new short[] {0, 2, 3, 4, 5, 1, 6});
    testRotate(new short[] {0, 1, 2, 3, 4, 5, 6}, -1, 1, 6, new short[] {0, 2, 3, 4, 5, 1, 6});

      "2",
      "",
      *bodyLines,
    )
  }

  private fun createJournalWithHeader(
    magic: String,
    version: String,
    appVersion: String,
    valueCount: String,
    blank: String,
    vararg bodyLines: String,
  ) {
    filesystem.write(journalFile) {
      writeUtf8(
        """
        |$magic
        |$version
        |$appVersion
        |$valueCount