if (oldCount == 0 && count > 0) {
      distinctElements++;
    } else if (oldCount > 0 && count == 0) {
      distinctElements--;
    }
    return oldCount;
  }

  @Override
  public void clear() {
    Arrays.fill(counts, 0);
    size = 0;
    distinctElements = 0;
  }

  abstract class Itr<T> implements Iterator<T> {
    int index = 0;
    int toRemove = -1;

  private void weaklyReferenceQueue() {
    frq = new FinalizableReferenceQueue();
    queueReference = new WeakReference<>(frq.queue);

    /*
     * Queue and clear a reference for good measure. We test later on that
     * the finalizer thread stopped, but we should test that it actually
     * started first.
     */
    reference =

    }

    /**
     * Clears all paging state and search/filter parameters.
     * Resets the pager to its initial state with default values.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

     *
     * @throws SAXException if a SAX error occurs during cleanup
     */
    @Override
    public void endDocument() throws SAXException {
        globalParams.clear();
        tagQueue.clear();
    }

    /**
     * SAX event handler called when an XML start element is encountered.
     * Processes collection definitions and tracks the element hierarchy.
     *

            return parent.removeAll(c);
        }

        public boolean retainAll(final Collection<?> c) {
            return parent.retainAll(c);
        }

        public void clear() {
            parent.clear();
        }

        public boolean equals(final Object o) {
            return parent.equals(o);
        }

        public int hashCode() {
            return parent.hashCode();

internal fun FileSystem.deleteIfExists(path: Path) {
  try {
    delete(path)
  } catch (fnfe: FileNotFoundException) {
    return
  }
}

/** Tolerant delete, try to clear as many files as possible even after a failure. */
internal fun FileSystem.deleteContents(directory: Path) {
  var exception: IOException? = null
  val files =
    try {
      list(directory)

     * @return HTML response with the reset related content list
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse reset(final SearchForm form) {
        relatedContentPager.clear();
        return asHtml(path_AdminRelatedcontent_AdminRelatedcontentJsp).renderWith(data -> {
            searchPaging(data, form);
        });
    }

    /**

            for (final String lang : form.lang) {
                if (StringUtil.isNotBlank(lang) && lang.length() < 1000) {
                    if (Constants.ALL_LANGUAGES.equals(lang)) {
                        langSet.clear();
                        break;
                    }
                    final String normalizeLang = systemHelper.normalizeLang(lang);
                    if (normalizeLang != null) {

    file.read()
```

En versiones recientes de Python, también hay un **async context manager**. Lo usarías con `async with`:

```Python
async with lifespan(app):
    await do_stuff()
```

Cuando creas un context manager o un async context manager como arriba, lo que hace es que, antes de entrar al bloque `with`, ejecutará el código antes del `yield`, y al salir del bloque `with`, ejecutará el código después del `yield`.

            }
        }

        // initial try, use locally cached metadata

        List<MetadataResult> results = repositorySystem.resolveMetadata(request.getRepositorySession(), requests);
        requests.clear();

        PluginPrefixResult result = processResults(request, trace, results, requests, candidates);

        if (result != null) {
            return result;
        }