Function foreach

modules/QtPDF/src/PDFBackend.cpp:267–271

  QWriteLocker docLocker(_docLock.data());
  foreach(QSharedPointer<Page> page, _pages) {
    if (page.isNull())
      continue;
    page->detachFromParent();
  }
  // Note: clear() releases all QSharedPointer to pages, thereby destroying them
  // (if they are not used elsewhere)
  _pages.clear();