path operator / (char* lhs, const path& rhs): This routine is a non-member function of path.
path operator / (char* lhs, const path& rhs):此例程是 path 的非成员函数。
However, there are cases when a non-member function is enough to serve the role of a mediator.
但是,也有情况下,当一个非成员函数足以成为一个中间人的角色。
How can I use a private member variable in a non-member function, when the variable happens to be a pointer?
我如何能在非成员函数使用私有成员变量时,变量是指针?
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