将成员变量声明为 private 我们在声明一个类的时候,肯定也会为类设计成员变量,但是这些成员变量究竟是 public、private 还是 protected 要具体分析。 通常来说,不要把成员变量设置为 public 和 protected ,如果把成员变量设置为 public ,看如下例子 //你的代码classTest{public:intval;};//客户的代码voidinc(constT...
1.切记将成员变量声明为private。这可赋予客户访问数据的一致性 可细微划分访问控制 允诺约束条件获得保证,并提供class作者以充分的实现弹性。 2.protected 并不比public更具有封装性。 狠芯低成本,专芯低功耗,计划高性能。
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effective c++ 条款22 declare data members private 给个用户class成员的访问权后,就失去了封装,一个类需要提供访问的成员变量有限,可以提供函数完成访问的功能,而且这样的话第一可以控制访问权限,第二可以避免用户不经意的修改成员变量。 破坏封装的影响也很大。
On the one hand, if data members are not public, the only way for clients to access an object is via member functions. If everything in the public interface is a function, client won't have to try to remember whether to use parentheses when they want to access a member of the class...
I have a child class that is inheriting from a parent class, but I can't see the private data members that are inherited from the parent when I use Unbundle by Name. How can I access these? Parent class private data members are accessed through VIs that are created in the LabVIEW ...
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