Method operator++

pdal/PointView.hpp:598–599

    PointViewIter& operator++()
        { m_id++; return *this; }
    PointViewIter operator++(int)
        { return PointViewIter(m_view, m_id++); }
    PointViewIter& operator--()
        { --m_id; return *this; }
    PointViewIter operator--(int)