自作クラスの２次元配列を作成したいのですが、incompatible typeとエラーが出ます。

Question

自作クラスの２次元配列を作成したいのですが、incompatible typeとエラーが出ます。
どのように改善すればいいのでしょうか？

NodeList **arrayHead;
arrayHead[i]= new NodeList*[num];
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~

./Graph.h:1222:121: error: assigning to 'Graph::NodeList *' from
      incompatible type 'Graph::NodeList **'; dereference with *
                

Answer 1

Maybe, NodeList **arrayHead = new NodeList*[num]; ?
(And then, create arrays for each.)

Comments

[alizona]

You are right.
I was be able to fix it.
I appreciate.

[fana]

I would consider using vector< vector<NodeList> > for "jagged", or vector< NodeList > for 2-dimensional(rectangular) array.
(Later case, elements are simply held in a W * H size 1-d array.)