unassigned reference
常見例句
- When a struct contains a reference type as a member, the default constructor of the member must be invoked explicitly, otherwise the member remains unassigned and the struct cannot be used.
當結構包含引用類型作為成員時，必須顯式調用該成員的默認構造函數，否則該成員將保持未賦值狀態(tài)且該結構不可用。 返回 unassigned reference