VertexRow.java 文件源码

@Override
public Iterator<Vertex> iterator() {
    return new AbstractIterator<Vertex>() {
        Vertex point = first;

        @Override
        protected Vertex computeNext() {
            if (point == null) {
                return endOfData();
            } else {
                Vertex old = point;
                point = old.next;
                return old;
            }
        }
    };
}