模块和库

模块

// 父模块是没有办法访问子模块的私有类型的
mod parent {
    pub struct PubStruct;
    struct PrivStruct;
    struct Demo {
        sub_pub: child::PubSubStruct,
        sub_priv: child::PrivSubStruct,
    }

    // 子模块可以访问父模块的公共类型
    mod child {
        use super::{PrivStruct, PubStruct};

        pub struct PubSubStruct {
            pub_struct: PubStruct,
            priv_struct: PrivStruct,
        }
        pub(super) struct PrivSubStruct;
    }
}