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你好,想问一下在CurrentConditionsDisplay类中,为什么不能把weatherdate->registerObserver(this);这句直接放在构造函数中呢。我放进去后会显示段错误,但不知道是什么原因造成的。
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你好,想问一下在CurrentConditionsDisplay类中,为什么不能把weatherdate->registerObserver(this);这句直接放在构造函数中呢。我放进去后会显示段错误,但不知道是什么原因造成的。
The text was updated successfully, but these errors were encountered: