我有同一个标题的问题here但现在,正如我将在下面的代码中呈现的那样,这似乎与我在具有相同标题的第一个问题中向我解释的方式相反。好的代码:
class LINT_rep
{
private:
char* my_data_; //stores separately every single digit from a number
public:
class Iterator:public iterator<bidirectional_operator_tag,char>
{
private:
char* myData_
public:
Iterator(const LINT_rep&);
};
};
#include "StdAfx.h"
#include "LINT_rep.h"
LINT_rep::Iterator::Iterator(const LINT_rep& owner):myData_(nullptr)
{
myData_ = owner.my_data_; /*
HERE I'M ACCESSING my_data WHICH IS PRIVATE AND THIS
CODE COMPILES ON VS2010 ULTIMATE BUT IT SHOULDN'T
BECAUSE my_data IS PRIVATE AND OTHER CLASS SHOULDN'T
HAVE ACCESS TO IT'S PRIVATE MEMB. AS EXPLAINED TO ME IN
QUESTION TO WHICH I;VE PROVIDED LINK. */
}
代码中的问题。谢谢。
最佳答案
在即将推出的 C++0x 标准中,嵌套类对封闭类成员的访问权限正在发生变化。在当前标准中,11.8 规定:
The members of a nested class have no special access to members of an enclosing class
在 C++0x 草案中,这更改为
A nested class is a member and as such has the same access rights as any other member
一些编译器正在采用新的访问规则;从你的问题来看,我猜VS2010是这样做的,而且根据经验我知道GCC已经这样做了一段时间了。
关于c++ - 内部类和外部成员的访问,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2881305/