/// check

Notice that you don't have to create a special class and pass it somewhere to **FastAPI** to "register" it or anything similar.

You just pass it to `Depends` and **FastAPI** knows how to do the rest.

///

## Share `Annotated` dependencies { #share-annotated-dependencies }

In the examples above, you see that there's a tiny bit of **code duplication**.

  public int read(byte[] b, int off, int len) throws IOException {
    // Obey InputStream contract.
    checkPositionIndexes(off, off + len, b.length);
    if (len == 0) {
      return 0;
    }

    // The rest of this method implements the process described by the CharsetEncoder javadoc.
    int totalBytesRead = 0;
    boolean doneEncoding = endOfInput;

    DRAINING:
    while (true) {

 * successive readings of "now" in the same process.
 *
 * <p>In contrast, <i>wall time</i> is a reading of "now" as given by a method like
 * {@link System#currentTimeMillis()}, best represented as an {@link java.time.Instant}. Such values
 * <i>can</i> be subtracted to obtain a {@link Duration} (such as by {@link Duration#between}), but

    checkNotNull(presentBehavior);
    checkNotNull(absentBehavior);
    if (!(list instanceof RandomAccess)) {
      list = new ArrayList<>(list);
    }
    // TODO(lowasser): benchmark when it's best to do a linear search

    int lower = 0;
    int upper = list.size() - 1;

    while (lower <= upper) {
      int middle = (lower + upper) >>> 1;
      int c = comparator.compare(key, list.get(middle));

 * implementation</a>.
 *
 * @author Austin Appleby
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 */
@Immutable
@SuppressWarnings("IdentifierName") // the best we could do for adjacent digit blocks
final class Murmur3_32HashFunction extends AbstractHashFunction implements Serializable {
  static final HashFunction MURMUR3_32 =

class CompactHashMap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMap<K, V> implements Serializable {
  /*
   * TODO: Make this a drop-in replacement for j.u. versions, actually drop them in, and test the
   * world. Figure out what sort of space-time tradeoff we're actually going to get here with the
   * *Map variants. This class is particularly hard to benchmark, because the benefit is not only in

* [GitHub Discussions](https://github.com/fastapi/fastapi/discussions/categories/questions?discussions_q=category%3AQuestions+is%3Aunanswered)
* [GitHub Issues](https://github.com/fastapi/fastapi/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3Aquestion+-label%3Aanswered+)

Во многих случаях Вы уже можете знать ответы на эти вопросы. 🤓

Если Вы много помогаете людям с их вопросами, Вы станете официальным [Экспертом FastAPI](fastapi-people.md#fastapi-experts). 🎉

     | or the command line, profiles have to have an ID that is unique.
     |
     | An encouraged best practice for profile identification is to use a consistent naming convention
     | for profiles, such as 'env-dev', 'env-test', 'env-production', 'user-jdcasey', 'user-brett', etc.
     | This will make it more intuitive to understand what the set of introduced profiles is attempting

		return "", "", s, ErrHeader
	}
	n -= int64(len(nStr) + 1) // convert from index in s to index in rest
	if n <= 0 {
		return "", "", s, ErrHeader
	}

	// Extract everything between the space and the final newline.
	rec, nl, rem := rest[:n-1], rest[n-1:n], rest[n:]
	if nl != "\n" {
		return "", "", s, ErrHeader
	}

	// The first equals separates the key from the value.

        return getList(OpenSearchUrlQueue.class, sessionId, null, 0, pollingFetchSize,
                SortBuilders.fieldSort(OpenSearchUrlQueue.WEIGHT).order(SortOrder.DESC),
                SortBuilders.fieldSort(CREATE_TIME).order(SortOrder.ASC));
    }

    /**
     * Saves the session state (currently not implemented).
     *
     * @param sessionId The session ID.
     */