public PairedStats snapshot() {
    return new PairedStats(xStats.snapshot(), yStats.snapshot(), sumOfProductsOfDeltas);
  }

  /** Returns the number of pairs in the dataset. */
  public long count() {
    return xStats.count();
  }

  /** Returns an immutable snapshot of the statistics on the {@code x} values alone. */
  public Stats xStats() {
    return xStats.snapshot();
  }

And you want to have a way for the frontend to authenticate with the backend, using a **username** and **password**.

We can use **OAuth2** to build that with **FastAPI**.

But let's save you the time of reading the full long specification just to find those little pieces of information you need.

Let's use the tools provided by **FastAPI** to handle security.

## How it looks { #how-it-looks }

            } else {
                cb.query().setDescription_MatchPhrase(dataConfigPager.description);
            }
        }
        // TODO Long, Integer, String supported only.

        // setup condition
        cb.query().addOrderBy_SortOrder_Asc();
        cb.query().addOrderBy_Name_Asc();

        // search

    }

        }
        final String minDocCountStr = request.getParameter("facet.minDocCount");
        if (StringUtil.isNotBlank(minDocCountStr)) {
            facetInfo.minDocCount = Long.parseLong(minDocCountStr);
        }
        final String sort = request.getParameter("facet.sort");
        if (StringUtil.isNotBlank(sort)) {
            facetInfo.sort = sort;
        }

      bitCount += CODE_BIT_COUNTS[byteIn].toLong()
    }

    return ((bitCount + 7) shr 3).toInt() // Round up to an even byte.
  }

  fun decode(
    source: BufferedSource,
    byteCount: Long,
    sink: BufferedSink,
  ) {
    var node = root
    var accumulator = 0
    var accumulatorBitCount = 0
    for (i in 0 until byteCount) {
      val byteIn = source.readByte() and 0xff

public abstract class NtlmServlet extends HttpServlet {

    /**
     * Default constructor.
     */
    protected NtlmServlet() {
        super();
    }

    /**
     *
     */
    private static final long serialVersionUID = -4686770199446333333L;

    /** The default domain for NTLM authentication */
    private String defaultDomain;

    /** The domain controller for authentication */
    private String domainController;

Or you might have any other way to communicate with the WebSocket endpoint.

---

But for this example, we'll use a very simple HTML document with some JavaScript, all inside a long string.

This, of course, is not optimal and you wouldn't use it for production.

In production you would have one of the options above.

    private int purge(final LocalDateTime time) {
        final SuggestHelper suggestHelper = ComponentUtil.getSuggestHelper();

        try {
            suggestHelper.purgeDocumentSuggest(time);
            final long cleanupDay = ComponentUtil.getFessConfig().getPurgeSuggestSearchLogDay();
            if (cleanupDay > 0) {
                suggestHelper.purgeSearchlogSuggest(time.minusDays(cleanupDay));
            }
            return 0;

 *
 * @deprecated use {@link NtlmPasswordAuthenticator} instead
 */
@Deprecated
public class NtlmPasswordAuthentication extends NtlmPasswordAuthenticator {

    /**
     *
     */
    private static final long serialVersionUID = -2832037191318016836L;

    /** The ANSI password hash */
    private byte[] ansiHash;
    /** The Unicode password hash */
    private byte[] unicodeHash;

        // capabilities
        buffer[bufferIndex++] = (byte) 0x80;
        buffer[bufferIndex++] = 0;
        buffer[bufferIndex++] = 0;
        buffer[bufferIndex++] = 0;
        // serverTime
        long time = new Date().getTime();
        SMBUtil.writeTime(time, buffer, bufferIndex);
        bufferIndex += 8;
        // serverTimeZone
        buffer[bufferIndex++] = (byte) 0x80;
        buffer[bufferIndex++] = (byte) 0xFF;