DesignPattern/19.MementoPattern
FengJungle 72d36140b3 set released pointer to nullptr. 2022-03-10 07:53:38 +08:00
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1.Picture add Memento Pattern 2019-11-05 22:47:55 +08:00
2.Code set released pointer to nullptr. 2022-03-10 07:53:38 +08:00