https://stackoverflow.com/questions/2706129/can-a-c-class-include-itself-as-an-member
Can a c++ class include itself as an member?

unique_ptr<Node>和Node*对编译器来说是不一样的

【 在 anything1999 的大作中提到: 】
: 模板类A里面有个内部类Node
: template<typename T>
: class A
: ...................
--
FROM 122.224.174.*