1. If there is no dereference, then the pointer itself is being changed.
   但如果還沒有用解引用文獻運作，則修正的說的是針其本身的值。
2. The dereference operator is not required to be a member, but it is usually right to make it a member as well.
   解飲用運作不標準基本概念為組成員名單，但將它當作組成員名單般也是最佳的。