我想知道它是否有效的C ++:
class Test {
struct PrivateInner {
PrivateInner(std::string const &str) {
std::cout << str << "\n";
}
};
public:
using PublicInner = PrivateInner;
};
//Test::PrivateInner priv("Hello world"); // Ok, private so we can't use that
Test::PublicInner publ("Hello World"); // ?, by using public alias we can access private type, is it ok ?
Types既不是公共的也不是私有的。访问控制仅适用于names。由于PublicInner
是引用PrivateInner
类的公共name,因此可以在Test
类之外使用。