C++ (Cpp) Optional::Construct Exemples

Exemple #1

Fichier : File.cpp Projet : AtulKumar2/gecko-dev

NS_IMETHODIMP
Blob::Slice(int64_t aStart, int64_t aEnd,
            const nsAString& aContentType, uint8_t aArgc,
            nsIDOMBlob **aBlob)
{
  Optional<int64_t> start;
  if (aArgc > 0) {
    start.Construct(aStart);
  }

  Optional<int64_t> end;
  if (aArgc > 1) {
    end.Construct(aEnd);
  }

  ErrorResult rv;
  nsRefPtr<Blob> blob = Slice(start, end, aContentType, rv);
  if (rv.Failed()) {
    return rv.StealNSResult();
  }

  blob.forget(aBlob);
  return NS_OK;
}