1、
You also write the least code by delegating responsibilities to a common constructor.
通功将职责拜托给儿用的解构函数,您编写的代码也最长.
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2、
The isbn member is implicitly initialized by the string default constructor as an empty string.
isbn成员由string的默认构造函数隐式初始化为空串.
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3、
4、
5、
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7、
This constructor exists for use by the Policy object instantiate new Permission objects.
存在该构造函数是因为Policy对象 要用来实例化新的Permission对象.
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8、
You need to create a user-defined default constructor for the class that initializes these members.
需要为初始化这些成员的类创建用户定义的默认构造函数.
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