以上来源于: WordNet
Why can't this friend function access the private variables?
为什么这不可以友元函数访问私有变量?
When do I have to use a friend function rather than a member function?
当我需要使用友元函数而不是成员函数?。
A friend function is used for accessing the non-public members of a class.
友元函数用来访问类的非公有成员。友元函数不是类的成员函数。
Our friend Schr?dinger told us that if you solve for the wave function, this is what the probability densities look like.
我们的朋友薛定谔告诉我们,如果你用波函数来解决,你就会知道这些概率密度看上去的样子。
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