You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: semantic.rs
    path of file: ./repos/tao-of-rust-codes/src/ch05
    
    the code of the file until where you have to start completion: /// # RAII自动资源管理
///
/// Base usage: 等价C++代码
/// ```c++
/// #include <iostream>
/// #include <memor
    
pub fn raii_demo(){
    fn main() {
        let orig = Box::new(5);
        println!("{}", *orig);
        let stolen = orig;
        // println!("{}", *orig);
    }

}