Method swap

Common/Core/vtkDataArrayTupleRange_Generic.h:1685–1693

  }

  friend VTK_ITER_INLINE void swap(TupleIterator& lhs, TupleIterator& rhs) noexcept
  {
    // Different arrays may use different iterator implementations.
    VTK_ITER_ASSERT(
      lhs.GetArray() == rhs.GetArray(), "Cannot swap iterators from different arrays.");

    using std::swap;
    swap(lhs.GetTupleId(), rhs.GetTupleId());
  }

  friend struct ConstTupleIterator<ArrayType, TupleSize>;
  friend struct ConstTupleReference<ArrayType, TupleSize>;